| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 428815000 | With defined laminate structural detail | 35 |
| 20100178529 | PERPENDICULAR MAGNETIC RECORDING DISK WITH ULTRATHIN NUCLEATION FILM FOR IMPROVED CORROSION RESISTANCE AND METHOD FOR MAKING THE DISK - A perpendicular magnetic recording disk has a granular cobalt alloy recording layer (RL) containing an additive oxide or oxides, an intermediate layer (IL) as an exchange-break layer on the “soft” magnetic underlayer (SUL), and an ultrathin nucleation film (NF) between the IL and the RL. In the method of making the disk, the IL is deposited at a relatively low sputtering pressure, to thereby reduce the roughness of the RL and overcoat (OC), while the NF and RL are deposited at substantially higher sputtering pressures. The resulting disk has good recording properties and improved corrosion resistance over a comparable disk made with an IL deposited at high sputtering pressure and without the NF. The NF may be a discontinuous film with an average thickness of less than about 1 nm. | 07-15-2010 |
| 20100209736 | PERPENDICULAR MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING AND REPRODUCING DEVICE - One object of the present invention is to provide a method for easily providing an ECC type magnetic recording medium with low cost, which is easily designed, and the present invention provides a perpendicular magnetic recording medium including at least a soft magnetic backing layer, an under layer, an intermediate layer, and a perpendicular magnetic recording layer on a non-magnetic substrate, wherein the perpendicular magnetic recording layer includes at least one of a main recording layer and an auxiliary recording layer, the main recording layer includes a layer having perpendicular magnetic anisotropy, the auxiliary recording layer is a multilayer including three or more of a soft magnetic layer and a non-magnetic layer which are layered alternately, and the outermost layer to the non-magnetic substrate is the soft magnetic layer. | 08-19-2010 |
| 20100239888 | Magnetic recording medium and magnetic recording and reproducing apparatus - A magnetic recording medium is provided in which recording elements and concave portions have a clear difference in terms of magnetism at the boundaries therebetween, and which has favorable production efficiency. The magnetic recording medium includes a substrate; a recording layer formed in a predetermined concavo-convex pattern over the substrate, convex portions of the concavo-convex pattern serving as recording elements; and a filler portion filling a concave portion between the recording elements. A center part of a bottom surface of the concave portion protrudes from edge parts of the bottom surface of the concave portion in a direction away from the substrate. | 09-23-2010 |
| 20100291411 | SPIN VALVE ELEMENT AND METHOD OF MANUFACTURING SAME - A spin valve element including parallelly or serially connected magnetic element groups, each magnetic element group having a plurality of magnetic elements that each include an intermediate layer of an insulating member or a nonmagnetic member sandwiched by a pair of ferromagnetic layers. The plurality of magnetic elements are further connected either in series or in parallel. | 11-18-2010 |
| 20110070463 | META-MATERIAL SLAB WITH ANISOTROPIC PERMITTIVITY - In a particular embodiment, a meta-material slab is formed from multiple layers of at least two different compositions. The meta-material slab is adapted to propagate an evanescent wave in a direction parallel to an axis to form a cone-shaped wave along the axis. | 03-24-2011 |
| 20110097601 | Wrap-around shielded writer with highly homogeneous shield material - A perpendicular magnetic recording (PMR) head is fabricated with a main pole shielded laterally by a pair of side shields, shielded above by a trailing shield and shielded optionally below by a leading shield. The shields and the seed layers on which they are formed are formed of materials having substantially the same physical characteristics including the same material composition, the same hardness, the same response to processes such as ion beam etching (IBE), chemical mechanical polishing (CMP), mechanical lapping, such as the slider ABS lapping, the same coefficient of thermal expansion (CTE) as well as the same B | 04-28-2011 |
| 20110097602 | External field robustness of read/write head shields - An improved magnetic shield for a perpendicular magnetic write head is disclosed. Its main feature is a pair of tabs at the shield's bottom corners. Said tabs are significantly wider at their point of attachment to the shield than further away from the shield. The end portions of each tab slope upwards (away from the ABS) at an angle of about ten degrees. A process for manufacturing the shield is also disclosed. | 04-28-2011 |
| 20110135962 | PMR WRITER AND METHOD OF FABRICATION - Methods for fabrication of tapered magnetic poles with a non-magnetic front bump layer. A magnetic pole may have a tapered surface at or near and air bearing surface (ABS), wherein a thickness of the write pole increases in a direction away from the ABS. A non-magnetic front bump layer may be formed on the tapered surface of the magnetic pole and away from the ABS. The front bump layer may increase the separation distance between a shield layer and the magnetic pole near the tapered surface, thereby improving the performance of the write head. | 06-09-2011 |
| 20110151279 | MAGNETIC WRITE HEAD MANUFACTURED BY AN ENHANCED DAMASCENE PROCESS PRODUCING A TAPERED WRITE POLE WITH A NON-MAGNETIC SPACER AND NON-MAGNETIC BUMP - A magnetic write head having a tapered trailing edge and having a magnetic layer formed over a trailing edge of the write pole at a location recessed from the ABS, the magnetic layer being separated from the trailing edge of the write pole by a thin non-magnetic layer. The thin non-magnetic layer is preferably sufficiently thin that the magnetic layer can function as a portion of the write pole in a region removed from the ABS. A trailing magnetic shield is formed over the write pole and is separated from the write pole by a non-magnetic trailing gap layer. A non-magnetic spacer layer can be formed over the magnetic layer to provide additional separation between the magnetic layer and the trailing magnetic shield. | 06-23-2011 |
| 20110262774 | METHOD FOR MANUFACTURING A MAGNETIC WRITE HEAD HAVING A WRAP AROUND TRAILING MAGNETIC SHIELD WITH A TAPERED SIDE GAP - A magnetic write head having write pole and a wrap-around-trailing magnetic shield having side portions that are separated from the write pole by tapered non-magnetic side gap layers. The tapered non-magnetic side gap layers provide a non-magnetic side gap width that increases with increasing distance from the ABS, thereby providing optimal protection against adjacent track interference at the ABS while minimizing write field loss to the shield in regions away from the ABS. | 10-27-2011 |
| 20110281138 | METHOD OF MOUNTING SEMICONDUCTOR CHIPS, SEMICONDUCTOR DEVICE OBTAINED USING THE METHOD,METHOD OF CONNECTING SEMICONDUCTOR CHIPS, THREE-DIMENSIONAL STRUCTURE IN WHICH WIRING IS PROVIDED ON ITS SURFACE, AND METHOD OF PRODUCING THE SAME - One aspect of the present invention is a method of mounting a semiconductor chip having: a step of forming a resin coating on a surface of a path connecting a bonding pad on a surface of a semiconductor chip and an electrode pad formed on a surface of an insulating base material; a step of forming, by laser beam machining, a wiring gutter having a depth that is equal to or greater than a thickness of the resin coating along the path for connecting the bonding pad and the electrode pad; a step of depositing a plating catalyst on a surface of the wiring gutter; a step of removing the resin coating; and a step of forming an electroless plating coating only at a site where the plating catalyst remains. Another aspect of the present invention is a three-dimensional structure in which a wiring is formed on a surface, wherein, on the surface of the three-dimensional structure, a recessed gutter for wiring is formed, extending between mutually intersecting adjacent faces of the three-dimensional structure, and wherein at least a part of a wiring conductor is embedded in the recessed gutter for wiring. | 11-17-2011 |
| 20120121935 | PROBE, METHOD FOR MANUFACTURING PROBE, PROBE MICROSCOPE, MAGNETIC HEAD, METHOD FOR MANUFACTURING MAGNETIC HEAD, AND MAGNETIC RECORDING/REPRODUCING DEVICE - At least two thin pieces, each of which is composed of a structure having conductor layers and dielectric layers laminated therein, are stacked such that those layers intersect each other and that the edges of the conductor layers face with a gap, and the stacked structure is cut along a dividing plane passing the intersecting section of the layers or the vicinity of the intersecting section and dividing the intersection angle of the layers to produce a probe. A magnetic head is produced using magnetic layers as conductor layers. | 05-17-2012 |
| 20120225322 | Sensor Arrangement - In an embodiment, a sensor arrangement may be provided. The sensor arrangement may include a sensor including a first spin valve. The first spin valve may include a first free layer structure; a first pinning structure disposed over the first free layer structure; and a first anti-ferromagnetic layer disposed over the first pinning structure. The sensor may further include a second spin valve. The second spin valve may include a second free layer structure; a second pinning structure disposed over the second free layer structure; and a second anti-ferromagnetic layer disposed over the second pinning structure. The sensor may also include a separator structure positioned between the first spin valve and the second spin valve such that the separator structure may be in contact with the first free layer structure and the second free layer structure. The first pinning structure may include an odd number of first ferromagnetic layers and the second pinning structure may include an even number of second ferromagnetic layers so as to enable the sensor to provide a differential signal when a current flows through the sensor. | 09-06-2012 |
| 20130065086 | REPRODUCING HEAD WITH SPIN-TORQUE OSCILLATOR, AND MAGNETIC RECORDING AND REPRODUCING APPARATUS - According to one embodiment, a reproducing head includes a spin-torque oscillator and a pair of shield parts. The spin-torque oscillator has a first surface facing a magnetic recording medium. The pair of shield parts each has a second surface facing the magnetic recording medium, the spin-torque oscillator being arranged between the shield parts. A distance between the second surface and the magnetic recording medium is shorter than a distance between the first surface and the magnetic recording medium. | 03-14-2013 |
| 20130071692 | Varyinig Morphology in Magnetic Sensor Sub-Layers - Various embodiments may be generally directed to a magnetic sensor constructed with a decoupling layer that has a predetermined first morphology. A magnetic free layer can be deposited contactingly adjacent to the decoupling layer with the magnetic free layer configured to have at least a first sub-layer having a predetermined second morphology. | 03-21-2013 |
| 20130078483 | USE OF MAGNETIC MATERIAL FOR RIE STOP LAYER DURING DAMASCENE MAIN POLE FORMATION - A write head for use in a magnetic disk drive and methods of manufacturing the same. When a non-magnetic reactive ion etching (RIE) stop layer is used in a damascene main pole fabrication process, the leading edge shield and the side shield have a magnetic separation. By replacing a non-magnetic RIE stop layer with a magnetic RIE stop layer, no removal of the RIE stop layer around the main pole is necessary. Additionally, the leading edge shield and the side shield will magnetically join together without extra processing as there will be no magnetic separation between the leading edge shield and the side shield. | 03-28-2013 |
| 20130089753 | Forming a Bridging Feature Using Chromeless Phase-Shift Lithography - First and second anchor features are formed on a photolithography mask, each having a respective center point. An elongated, chromeless, bridging feature is formed between the anchor features. The bridging feature is offset from the center points of the anchor feature to minimize distortions of a corresponding photoresist feature formed by the bridging feature | 04-11-2013 |
| 20140004385 | MAGNETIC ELEMENT WITH TOP SHIELD COUPLED SIDE SHIELD LAMINATION | 01-02-2014 |
| 20140106182 | High Coercivity Magnetic Film for Use as a Hot Seed in a Magnetic Write Head and Method to Grow It - A sub-structure, suitable for use as a hot seed on which to form a perpendicular magnetic main write pole, is described. It is made up of a buffer layer of atomic layer deposited alumina on which there are one or more seed layers having a body-centered cubic (bcc) crystal structure. Finally, the high coercivity magnetic film lies on the seed layer(s). It is critical that the high coercivity magnetic film be deposited at a very low deposition rate (around 1 Angstrom per second). | 04-17-2014 |
| 20140315045 | Supermalloy and Mu Metal Side and Top Shields for Magnetic Read Heads - The use of supermalloy-like materials for the side and top shields of a magnetic bit sensor is shown to provide better shielding protection from stray fields because of their extremely high permeability. | 10-23-2014 |
| 20150118520 | LOW RESISTANCE MAGNETIC SENSOR WITH EXTENDED PINNED LAYER STRUCTURE - A magnetic read sensor having improved pinning and reduced area resistance. The sensor has pinned magnetic layer that extends beyond the functional stripe of the sensor to improve magnetic pinning. The free layer has a magnetic portion that extends to the functional stripe height and a non-magnetic portion that extends beyond the functional stripe height. The sensor may have an end point detection layer located between the magnetic pinned layer and the magnetic free layer. | 04-30-2015 |
| 20160099019 | WRITER POLE FORMATION - Implementations disclosed herein provide a method of reducing the topography at the alignment and overlay marks area during the writer pole photolithography process in order to reduce the wafer scale variation and reduce the writer pole photolithography process rework rate. In one implementation, an intermediate stage of a wafer for writer pole formation is generated by removing a part of at least one metallic writer pole layer on top of an intermediate stage writer pole wafer to form a recovery trench, depositing an optically transparent material on top of the wafer, wherein the thickness of the optically transparent material is higher than a target recovery trench topography, forming a photoresist pattern on top of the optically transparent material over the recovery trench, etching the optically transparent material, and removing the photoresist pattern and at least part of the remaining optically transparent material. | 04-07-2016 |
| 428815100 | Head with slider structure | 3 |
| 20090068498 | MATERIAL OF CERAMIC SUBSTRATE FOR THIN-FILM MAGNETIC HEAD - A ceramic substrate material has good thermal conductivity and machinability, which are high enough to apply it to thin-film magnetic heads, and low particle generation. A ceramic substrate material for a thin-film magnetic head includes 25 vol % to 70 vol % of WC and the balance consisting essentially of Al | 03-12-2009 |
| 20110195275 | MATERIAL DEPOSITION ON TRANSDUCING HEAD - An apparatus includes a slider body having a leading edge and an opposite trailing edge, as well as a top face and a bottom face each extending between the leading edge and the trailing edge. The slider body further includes a plurality of protrusions extending from the bottom face, a first recess defined on one of the protrusions, and a sacrificial layer deposited on the slider body in the recess. A bottom surface of the sacrificial layer extends at least as far from the bottom face as bottom surfaces of the plurality of protrusions. In another aspect, a first blocking feature is located at a first uptrack edge on an air bearing surface of a slider, with the first blocking feature being substantially continuous along the first uptrack edge and protruding outwardly from the air bearing surface to reduce particle interaction with the air bearing surface. | 08-11-2011 |
| 20130288077 | DETERMINING AT LEAST ONE OF ALIGNMENT AND BOND LINE THICKNESS BETWEEN AN OPTICAL COMPONENT AND A MOUNTING SURFACE - A bottom surface of an optical component is bonded to a mounting surface. The bottom surface includes a first opaque feature and the mounting surface includes a second opaque feature. The first and second opaque features are hidden between the bottom surface and the mounting surface after the bonding. An infrared image is obtained through a top surface of the optical component that is opposed to the bottom surface. The infrared image includes a view of a region proximate first and second opaque features. One or more of an optical alignment and a bond line thickness between the optical component and the mounting surface is determined via the infrared image. | 10-31-2013 |
| 428815200 | With head pole component | 10 |
| 20100159282 | METHODS FOR CREATING A MAGNETIC MAIN POLE WITH SIDE SHIELD AND SYSTEMS THEREOF - A method according to another embodiment includes forming a side shield layer of ferromagnetic material above a substrate; masking the side shield layer; milling an unmasked region of the side shield layer for forming a pole trench therein; and forming a pole layer in the pole trench. A structure according to one embodiment includes a substrate; a side shield layer of ferromagnetic material on the substrate, wherein the substrate has a region covered by the side shield layer and a region not covered by the side shield layer; a pole trench in the side shield layer and the region of the substrate not covered by the side shield layer; a layer of nonmagnetic material in the pole trench; and a pole layer in the pole trench, wherein the pole layer has a greater thickness above the region of the substrate not covered by the side shield layer than above the region of the substrate covered by the side shield layer. | 06-24-2010 |
| 20110300409 | MAGNETIC RECORDING HEAD AND MAGNETIC RECORDING APPARATUS - An example magnetic recording head includes: a main magnetic pole; a laminated body; and a pair of electrodes. The laminated body includes a first magnetic layer having a coercivity lower than magnetic field applied by the main magnetic pole, a second magnetic layer having a coercivity lower than the magnetic field applied by the main magnetic pole, and an intermediate layer provided between the first magnetic layer and the second magnetic layer. The pair of electrodes is operable to pass a current through the laminated body. | 12-08-2011 |
| 20120107645 | METHOD FOR MANUFACTURING A SHORT FLARE DEFINITION BY ADDITIVE PROCESS FOR PERPENDICULAR HEAD - A method for manufacturing a magnetic write head for perpendicular magnetic recording. The method includes forming a write pole, and then depositing a refill layer. A mask structure can be formed over the writ pole and refill layer, the mask structure being configured to define a stitched pole. An ion milling or reactive ion milling can then be performed to remove portions of the refill layer that are not protected by the mask structure. Then a magnetic material can be deposited to form a stitched write pole that defines a secondary flare point. The stitched pole can also be self aligned with an electrical lapping guide in order to accurately locate the front edge of the secondary flare point relative to the air bearing surface of the write head. | 05-03-2012 |
| 20120282492 | THIN-FILM MAGNETIC HEAD, METHOD OF MANUFACTURING THE SAME, HEAD GIMBAL ASSEMBLY, AND HARD DISK DRIVE - A thin-film magnetic head is constructed such that a main magnetic pole layer, a write shield layer, a gap layer, and a thin-film coil are laminated on a substrate. The thin-film magnetic head includes a return magnetic pole layer and a connecting magnetic layer. The return magnetic pole layer is formed at a position distanced from the medium-opposing surface on the side opposite to the write shield layer with the main magnetic pole layer intervening therebetween. The connecting magnetic layer is formed using a magnetic material so as to connect the return magnetic pole layer to the write shield layer on the side closer to the medium-opposing surface than is the thin-film coil. The thin-film coil is wound as a flat spiral around the write shield layer. A part of the thin-film coil wound as the flat spiral is disposed only at a position distanced from the substrate than is the main magnetic pole layer. | 11-08-2012 |
| 20120295133 | Writer with an AFM write gap - A perpendicular magnetic recording (PMR) head is fabricated with main pole and a trailing edge shield antiferromagnetically coupled across a write gap by either having the write gap layer formed as a synthetic antiferromagnetic tri-layer (SAF) or formed as a monolithic layer of antiferromagnetic material. The coupling improves the write performance of the writer by enhancing the perpendicular component of the write field and its gradient. Methods of fabricating the writer are provided. | 11-22-2012 |
| 20130004795 | Shield with Continuously Concave Inner Sidewall - A write element for magnetic recording includes a main pole and a shield. The main pole has first and second sides with respect to a down-track direction. The shield at least partially surrounds the main pole with a continuously concave inner sidewall. The angle between the inner sidewall of the shield and the direction of motion of the write element is greater than the angle between the sides of the main pole and the direction of motion. | 01-03-2013 |
| 20130022840 | METHOD FOR MANUFACTURING A MAGNETIC WRITE HEAD WITH A FLOATING LEADING SHIELD - A method for manufacturing a magnetic write head having a write pole with a tapered leading edge formed on a substrate having a tapered surface and a wrap-around, trailing magnetic shield. The method uses a multi-layer anti-reflective coating prior to formation of the shield so that reflection from the tapered surface of the substrate does not affect the lithography of the mask used to form the trailing shield. The multi-layer antireflective coating is constructed of materials that can be left in the finished head, thereby eliminating problems associated with removal of the anti-reflective coating. | 01-24-2013 |
| 20130022841 | POLE TIP SHIELD SHAPED TO PROVIDE A DIFFERENTIAL SHIELDING EFFECT ALONGSIDE THE MAGNETIC POLE TIP - The application discloses a magnetic pole assembly having a pole tip arranged in a magnetic flux path and side shields separated from the pole tip by non-magnetic gap regions. The side shields are shaped to provide a differential shielding effect alongside the pole tip. As described, the sides shields are shaped to provide a non-magnetic gap region having a width that increases in the downtrack direction along a length of the pole tip. The increasing non-magnetic gap region alongside the pole tip provides a smaller non-magnetic gap region separating the pole tip from the side shields at the leading edge than the non-magnetic gap region separating the pole tip from the side shields at the trailing edge of the pole tip. | 01-24-2013 |
| 20130344351 | WRITE POLE FOR RECORDING HEAD - A write pole structure disclosed herein includes a write pole layer, a bottom layer including a beveled surface, and a cap layer between the write pole layer and the bottom layer, wherein the cap layer is made of a material with hardness less than hardness of the write pole layer. | 12-26-2013 |
| 20150056473 | SHIELD WITH UNIFORM MAGNETIC PROPERTIES FOR A PERPENDICULAR MAGNETIC RECORDING HEAD - Depositing a seed layer for a high-moment shield onto a write pole may have a deleterious effect on the magnetic response of the write pole. Instead, an amorphous separation layer may be deposited between the write pole and the seed layer. In one embodiment, the seed layer is formed directly on the amorphous layer. In addition to separating the seed layer from the write pole, the amorphous separation layer permits the seed layer to dictate the crystallographic orientation of the shield which is subsequently deposited on the magnetic head. That is, the amorphous layer provides a substrate that allows the seed layer to have a crystalline structure independent of the layers that were deposited previously. The amorphous separation layer may comprise an amorphous metal—e.g., NiNb or NiTa—or an insulative material—e.g., alumina or silicon dioxide. | 02-26-2015 |
