| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 264200600 | Nonmechanical aftertreatment (e.g., hydration of contact lens, extraction, heat treatment, etc.) | 33 |
| 20080203592 | Method for imparting hydrogel contact lenses with desired properties - A cost-effective method for making hydrogel contact lenses with desired properties, such as antimicrobial property and/or increased surface hydrophilicity. The method comprises a step of contacting a dry or unhydrated hydrogel contact lens with an aqueous solution (or hydrating solution) containing silver nanoparticles and/or a lubricant or wetting agent. By using a method of the invention, resultant hydrogel contact lenses can have antimicrobial capability and/or enhanced lens wearer's comfort. | 08-28-2008 |
| 20080284049 | THERMAL CURING METHODS AND SYSTEMS FOR FORMING CONTACT LENSES - Contact lens curing systems and methods are described. A contact lens curing system includes an oven that has a plurality of curing zones a mold advancement system for moving the contact lens mold assemblies between the plurality of zones and a controlled atmosphere within the curing zones that provides a substantially chemically inert environment in which contact lens precursor materials can be polymerized in contact lens mold assemblies located in the curing zones. Methods of producing contact lenses include curing contact lens precursor materials in contact lens mold assemblies in the lens curing system. As an example, an oven for curing contact precursor materials in molds the curing process being done in an inert atmosphere, includes a plurality of heating zones, such as three heating zones | 11-20-2008 |
| 20080290535 | REDUCTION OF EXCESS POLYMERIC FLASH RING - The present invention includes methods and apparatus for forming a biomedical device, such as an ophthalmic lens, in a area defined by a first mold part and a second mold part wherein during the formation of the biomedical device a HEMA is formed and the HEMA ring and a greater adhesive force is generated on the HEMA ring by the second mold part than the first mold part. | 11-27-2008 |
| 20080290536 | TEMPERATURE CYCLING FACILITATED RELEASE OF OPHTHALMIC LENSES - This invention discloses methods and apparatus for facilitating release of an ophthalmic lens from a mold part used to form the lens. According to the present invention, the ophthalmic lens and a mold part used to form the ophthalmic lens are exposed first to an environment of reduced thermal energy and then exposed to an environment of increased thermal energy. | 11-27-2008 |
| 20090001621 | Resin molding method of optical component, mold apparatus, and gate bushing - A resin molding method for molding an optical component having an effective part where light is transmitted and a circumferential part provided at a circumference of the effective part, the resin molding method includes the steps of retracting a gate shutting pin so that resin is supplied in a cavity forming part of a mold apparatus; extending the gate shutting pin to inside the circumferential part of the optical component formed by making the resin solid in the cavity forming part, and stopping the gate shutting pin outside the effective part; cooling the resin in the cavity forming part so that the resin is made solid; retracting the pin to an outside the circumferential part of the optical component; and opening the mold apparatus so that the optical component is taken out. | 01-01-2009 |
| 20090026640 | Programmable wetting controller - An apparatus for wetting and coating ophthalmic lenses having a tank with a cleaning or coating solution and a handling system for sequentially moving a lens and the solution in relation to each other, to wet the lens. A master control module is coupled to the handling system and configured execution a wetting profile. The wetting profile moves the lens to obtain a generally consistent lens surface wetting speed so that the lens coating has a more uniform thickness. According to a method, lenses are wetted in a liquid bath. The lens is placed in a handling system which moves the lens with respect to the bath according to a wetting profile. The wetting profile is based on the incremental vertical lens surface slope with respect to the surface of the solution | 01-29-2009 |
| 20090032988 | OPHTHALMIC LENS PROCESSING TO DECREASE DYNAMIC CONTACT ANGLE - This invention discloses methods and apparatus for processing s silicon ophthalmic lens. The processing includes exposing the ophthalmic lens to a solution of Tri(Propylene Glycol) Methyl Ether and decreasing the dynamic contact angle of the lens surface. | 02-05-2009 |
| 20090051060 | PREPARATION OF ANTIMICROBIAL CONTACT LENSES WITH REDUCED HAZE USING SWELLING AGENTS - This invention relates to antimicrobial lenses containing metals and methods for their production. | 02-26-2009 |
| 20090108479 | Method for Making Biomedical Devices - A method of preparing a biomedical device is disclosed. The method involves the steps: (a) cast molding at least one biomedical device formed from a monomer mixture comprising at least one silicone-containing monomer and at least one hydrophilic monomer in a mold assembly, the mold assembly comprising at least one anterior mold part made of a first plastic material and one posterior mold part made of a second plastic material, wherein the first plastic material is more polar relative to the second plastic material; and (b) contacting a surface of the biomedical device with a solution comprising a proton-donating wetting agent, whereby the wetting agent forms a complex with the hydrophilic monomer on the surface of the biomedical device. | 04-30-2009 |
| 20090295004 | SILICONE HYDROGEL CONTACT LENSES DISPLAYING REDUCED PROTEIN UPTAKE - The present invention relates to silicone hydrogel contact lenses formed from a reactive mixture comprising at least one silicone containing compound and a protein uptake reducing amount of at least protein uptake reducing compound. | 12-03-2009 |
| 20090302488 | METHOD AND APPARATUS FOR THE DRY RELEASE OF A COMPLIANT OPHTHALMIC ARTICLE FROM MOLD SURFACE - An apparatus for releasing a molded lens from a deformable mold includes a shear ring for temporarily retaining an annular portion of the deformable mold outside a periphery of the lens and a plunger for deforming an annular section of the deformable mold within the periphery of the lens. The apparatus can be employed to release a non-hydrated hydrogel lens from a deformable mold section. | 12-10-2009 |
| 20100044893 | Apparatus for Removing an Ophthalmic Lens from a Mold Half - An apparatus ( | 02-25-2010 |
| 20100072642 | Method of Coating a Contact Lens - A method of coating a contact lens comprising the steps of forming an initiator layer on the surface of the contact lens by plasma deposition of at least one initiator monomer and polymerising a propagation monomer onto the initiator layer to form a coating layer of a polymeric material on the contact lens and a method of coating a medical device comprising the steps of forming an initiator polymer layer on at least a part of the medical device by plasma deposition of at least one initiator monomer and polymerising at least one zwitterionic monomer onto the initiator layer to form a coating layer of a polymeric material on the medical device. | 03-25-2010 |
| 20100084775 | BIOMEDICAL DEVICES CONTAINING INTERNAL WETTING AGENTS - This invention includes a wettable biomedical device containing a high molecular weight hydrophilic polymer and a hydroxyl-functionalized silicone-containing monomer. | 04-08-2010 |
| 20100252942 | DIFFRACTIVE OPTICAL ELEMENT AND OPTICAL SYSTEM USING THE SAME - A diffractive optical element includes stacked first and second diffraction gratings made of different materials. The materials of the first and second diffraction gratings are glass. The first and second diffraction gratings have grating surfaces contacted to each other. The materials satisfy a predetermined condition when Tg | 10-07-2010 |
| 20110018152 | CONTACT LENS PACKAGES - A package having a roughened surface that does not adhere to a medical device enclosed therein. | 01-27-2011 |
| 20110062607 | METHODS, DEVICES, AND SYSTEMS FOR MOVING WET OPHTHALMIC LENSES DURING THEIR MANUFACTURE - Methods, devices, and systems for moving wet ophthalmic lenses are described in which the ophthalmic lenses are first placed in wells of lens carriers and are centered by the structure of the wells. The carriers are then moved to a transfer module of a packaging system for transferring the ophthalmic lenses in blister packages. The transfer from the carriers to the blister packages are performed by a pick and place robot having pickup heads sized and configured for suctioning the ophthalmic lenses from the lens carriers. | 03-17-2011 |
| 20110068496 | THERMAL CURING METHODS AND SYSTEMS FOR FORMING CONTACT LENSES - Contact lens curing systems and methods are described. A contact lens curing system includes an oven that has a plurality of curing zones, a mold advancement system for moving the contact lens mold assemblies between the plurality of zones, and a controlled atmosphere within the curing zones that provides a substantially chemically inert environment in which contact lens precursor materials can be polymerized in contact lens mold assemblies located in the curing zones. Methods of producing contact lenses include curing contact lens precursor materials in contact lens mold assemblies in the lens curing system. As an example, an oven for curing contact precursor materials in molds, the curing process being done in an inert atmosphere, includes a plurality of heating zones, such as three heating zones | 03-24-2011 |
| 20110079931 | METHODS FOR GLOBALLY TREATING SILICA OPTICS TO REDUCE OPTICAL DAMAGE - A method for preventing damage caused by high intensity light sources to optical components includes annealing the optical component for a predetermined period. Another method includes etching the optical component in an etchant including fluoride and bi-fluoride ions. The method also includes ultrasonically agitating the etching solution during the process followed by rinsing of the optical component in a rinse bath. | 04-07-2011 |
| 20110147959 | METHOD OF SEPARATING EXCESS LENS FORMING MATERIAL FROM A MOLDED OPHTHALMIC LENS, IN PARTICULAR A CONTACT LENS - There is described a method of separating excess lens forming material from a molded ophthalmic lens, in particular a contact lens. After polymerization and/or cross-linking of a lens forming material (P) within a mold cavity ( | 06-23-2011 |
| 20110163467 | INJECTION MOLDING OF PARTHAVING NONUNIFORM THICKNESS - Injection molding of a part having a nonuniform thickness is provided. One disclosed embodiment of an injection molding device includes one or more side walls, a first mold surface intersecting the side walls and being stationary with respect to the side walls, and a second mold surface intersecting the side walls so as to define with the side walls and the first mold surface a cavity configured to receive a metered amount of injected molten thermoplastic material. The second mold surface is moveable toward the first mold surface in such a manner that a first end of the second mold surface moves a larger physical travel distance toward the first mold surface than does a second end of the second mold surface during a molding process. | 07-07-2011 |
| 20110193247 | HYDROGEL PROCESSING - Disclosed are methods and apparatus for hydrating ophthalmic lenses and leaching excess materials from the ophthalmic lenses. The methods include the steps of exposing contact lenses with a hydration solution comprising about 30 to 70 percent isopropyl alcohol and water. In some embodiments, the hydration solution is maintained at an elevated temperature. Exposure to a first hydration solution causes the ophthalmic lenses to swell to a size larger than their functional size, and exposure to a second ophthalmic solution causes the lenses to shrink back to a functional size. | 08-11-2011 |
| 20110204532 | FABRICATION PROCESS FOR SINGLE-CRYSTAL OPTICAL DEVICES - The invention provides a fabrication process for single-crystal optical devices wherein, in a processing step for a single-crystal optical device, at least one heating treatment is implemented at a temperature that is 0.50 times to less than 0.67 times as high as the melting point of a single-crystal material after a member is cut out of a matrix material for the single-crystal material having a melting point of greater than 2,000° C. to less than 2,900° C. and before an optical device assembling step. | 08-25-2011 |
| 20110254180 | Method for producing a rotationally symmetric lens from a ceramic green body and moulding tool for performing the method - The method for producing at least one rotationally symmetrical lens consisting of an opto-ceramic includes the step of moulding a ceramic green body for the lens, wherein the mould has a shaping surface, which is described by the following equation B: | 10-20-2011 |
| 20120001353 | METHOD AND APPARATUS FOR THE DRY RELEASE OF A COMPLIANT OPHTHALMIC ARTICLE FROM A MOLD SURFACE - An apparatus for releasing a molded lens from a deformable mold includes a shear ring for temporarily retaining an annular portion of the deformable mold outside a periphery of the lens and a plunger for deforming an annular section of the deformable mold within the periphery of the lens. The apparatus can be employed to release a non-hydrated hydrogel lens from a deformable mold section. | 01-05-2012 |
| 20120013031 | Mould Comprising Two Internal Corner-Cubes and Component Comprising Cuboid Elements Forming Two Internal Corner-Cubes - The invention provides a mould ( | 01-19-2012 |
| 20120193822 | BIOMEDICAL DEVICES CONTAINING INTERNAL WETTING AGENTS - This invention includes a wettable biomedical device containing a high molecular weight hydrophilic polymer and a hydroxyl-functionalized silicone-containing monomer. | 08-02-2012 |
| 20120267808 | Contact Lens Packages - A package having a roughened surface that does not adhere to a medical device enclosed therein. | 10-25-2012 |
| 20130175722 | PROCESS FOR MAKING OPHTHALMIC LENSES - The present invention relates to aqueous processes for the production of silicone hydrogel contact lenses. | 07-11-2013 |
| 20130228943 | ANTIMICROBIAL MEDICAL DEVICES - The present invention provides methods for making an antimicrobial medical device, preferably an antimicrobial ophthalmic device, more preferably an antimicrobial extended-wear contact lens, which contains silver nano-particles distributed uniformly therein. The antimicrobial medical device can exhibit antimicrobial activity over an extended period of time. | 09-05-2013 |
| 20140175685 | Method for Making Silicone Hydrogel Contact Lenses - The instant invention pertains to a method and a fluid polymerizable composition for producing contact lenses with improved lens quality and with increased product yield. The method of the invention involves adding a water soluble and/or water dispersible quaternary ammonium cationic group containing silicone surfactant into a fluid polymerizable composition including a lens-forming material in an amount sufficient to reduce an averaged mold separation force by at least about 30% in comparison with that without the water soluble and/or water dispersible quaternary ammonium cationic group containing silicone surfactant. | 06-26-2014 |
| 20140264983 | Systems And Methods For Light Lens Hot Stamping - The present disclosure provides systems and methods for fabricating a patterned lens through hot stamping techniques. In certain example embodiments, a lens material is placed in a heat press. The heat press includes at least one shim having a patterned surface. The shim is pressed onto the lens material with the patterned surface contacting the lens material. The heat press heats the lens material to malleability and the pattern of the shim is pressed into the lens material. The lens material is then cooled and a patterned lens is fabricated. | 09-18-2014 |
| 20140346695 | METHOD OF MANUFACTURING AN OPHTHALMIC LENS WITH A PASSIVE EVENT-BASED COLORATION SYSTEM - The present invention discloses methods and apparatus for methods and apparatus for manufacturing an Ophthalmic Lens with passive event coloration mechanisms, which may not require a power source. In some embodiments, the passive event coloration mechanisms may be combined with Rigid Inserts or Media Inserts, wherein the inserts may provide additional functionalities. | 11-27-2014 |
