| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 030346500 | Razor blade | 35 |
| 20100083510 | Shaving Razors and Cartridges - A shaving cartridge has a housing with at least one blade having a blade edge. The housing has a first guard in front of the blade with a plurality of projections defining a plurality of open slots extending generally transverse to the blade edge. The open slots have a width of about 0.20 mm to about 0.49 mm and a pitch of about 0.40 mm to about 0.85 mm for allowing the free passage of hair during shaving. | 04-08-2010 |
| 20120204429 | Method of Forming a Lubricating Coating on a Razor Blade, Such a Razor Blade and Razor Blade Coating System - A method of forming a lubricating coating on a razor blade that includes: providing a razor blade having a body and a cutting edge tapering from the body; providing a tank of a colloidal dispersion of a polymer having less than 2% in weight of polymer particles; providing a spray gun in fluid communication with the tank, the gun having an end directed to a blade-spraying region; placing the razor blade at a predetermined temperature (T) in the blade-spraying region; flowing the colloidal dispersion from the tank to the end of the spray gun, and in a direction to the razor blade; controlling a first gas stream to nebulise the colloidal dispersion into a mist in a dispersion region located between the end of the spray gun and the razor blade; independently controlling a second gas stream to control the mist properties; transporting the mist from the dispersion region to the razor blade placed in the blade-spraying region, the razor blade being at the predetermined temperature (T) so that water evaporates from the mist, and sintering the polymer. | 08-16-2012 |
| 20140090257 | FORMATION OF THIN UNIFORM COATINGS ON BLADE EDGES USING ISOSTATIC PRESS - The invention discloses isostatic-pressing (IP) applied to polymer (e.g., PTFE) coated razor blade edges to produce thin, dense, and uniform blade edges which in turn exhibit low initial cutting forces correlating with a more comfortable shaves. The isostatic press utilized may be a hot isostatic press (HIP) or cold isostatic press (CIP) or any other isostatic press process. The HIP conditions may include an environment of elevated temperatures and pressures in an inert atmosphere. The HIP conditions may be applied to non-sintered coatings or sintered coatings or before or after a Flutec® process is applied to coatings. CIP conditions may include room temperature and elevated pressure. The polymeric material may be a fluoropolymer or a non-fluoropolymer material or any composite thereof. It may be deposited initially by any method, including but not limited to, dipping, spin coating, sputtering, or thermal Chemical Vapor Deposition (CVD). | 04-03-2014 |
| 030346510 | Cutting couple element | 4 |
| 20090038166 | SHARP UNDERCUTTER AND UNDERCUTTER FABRICATION - This invention employs a serrated or scalloped edge ( | 02-12-2009 |
| 20090271994 | SHAVING FOIL FOR AN ELECTRIC SHAVING APPARATUS - A shaving foil for an electric shaving apparatus. The shaving foil includes a perforated region with a plurality of holes which are separated from each other by bars. The perforated region is divided at least into two zones, preferably a central zone, a first edge zone, and a second edge zone. The central zone is arranged between the first edge zone and the second edge zone. The holes in the central zone have (i) an average size which is smaller than the average size of the holes in the first edge zone and in the second edge zone, (ii) a floating mean value of the size of the openings in the central zone smaller than a floating mean value of the size of the openings in the first edge zone and the second edge zone, or both (i) and (ii). | 11-05-2009 |
| 20130145629 | Inner Cutter For Rotary Shaver - A blade for an inner cutter of a rotary shaver generally includes an annular base plate and a plurality of cutting units spaced about the base plate. Each of the cutting units has a pair of generally radially spaced-apart cutting edges and an orientation axis. The orientation axes define a plurality of differently angled spaces about the blade. | 06-13-2013 |
| 20160129602 | Clipper Head with Drag Reduction - A clipper head ( | 05-12-2016 |
| 030346530 | Of specific material | 19 |
| 20090113726 | METHOD FOR OBTAINING A HARD SURFACE AT THE NANOSCALE - The invention relates to a method for forming a thin, high hardness coating and devices comprising it. | 05-07-2009 |
| 20110030226 | Ceramic razor blade - Disclosed is a razor or cutting blade of a thin sheet-like construction having a ceramic material contained therein. The blade is either wholly made of a ceramic material or has a coating of ceramic material thereon. The blade may be made of many different shapes, such as a rectangle a trapezoid. The blade may have a metal ridge on one edge of the rectangle while the other longitudinal edge is sharpened. The trapezoid construction may have the long edge sharpened in addition to one of the slanted edges. Any of the blades may have notches in non-sharpened edges thereof to act as locating guides when placed in a manipulating handle. | 02-10-2011 |
| 20110047805 | Razor blade extender - A system for sharpening and or honing a multi-bladed razor cartridge including a handle and flexible honing material. The flexible honing material is used to hone the razor blades prior to use and to remove excess moisture from the razor blades once the razor blades are cleaned after shaving. The flexible honing material is made of a chamois which can conform to the shape of the razor blade cartridge and razor blades within the cartridge. | 03-03-2011 |
| 20130180117 | Razor Blade Technology - A razor cartridge includes razor blade assemblies having an inter-blade guard attached to a side of a razor blade. The razor blade is formed from strip that is manufactured including a thermal oxidation process to form a chromium oxide layer on the side surface of the razor blade. This oxide film prevents electrochemical corrosion of the razor blade that may be visible to a user and prevents real or perceived premature failure of the razor blade and thus the razor cartridge during its extended life. The razor blade assembly may also have an array of closely spaced droplets of a liquid adapted to inhibit corrosion of the razor blade applied to the side of the razor blade visible to a user. | 07-18-2013 |
| 20140041239 | CERAMIC CUTTING BLADES - The present invention generally relates to blades for utility knives, craft knives, box cutters, and other cutting tools. Specifically, this invention relates to cutting blades manufactured from ceramics. | 02-13-2014 |
| 20140101945 | FORMATION OF THIN UNIFORM COATINGS ON BLADE EDGES USING ISOSTATIC PRESS - The invention discloses utilizing isostatic-press (IP) processes apply a polymeric material (e.g, a PTFE foil) to uncoated razor blade edges forming thin, dense, and uniform coatings on blade edges which in turn exhibit low initial cutting forces correlating with more comfortable shaves. The isostatic press may be a hot isostatic press (HIP) or a cold isostatic press (CIP) or any other isostatic press process. The HIP conditions may include an environment of elevated temperatures and pressures in an inert atmosphere. The CIP conditions may include room temperature and elevated pressure. The polymeric material may be a fluoropolymer or non-fluoropolymeric material or any composite thereof. The lower surface of the polymeric material may be modified (e.g., chemical etching) to enhance adhesion to the blade edge. Two or more layers of polymeric material of similar or different properties may be isostatically pressed onto the uncoated blades. | 04-17-2014 |
| 20150360376 | Methods Of Manufacturing Silicon Blades For Shaving Razors - Methods are provided for the manufacture of razor blades from silicon material. In some implementations, the method includes aligning a mono-crystalline silicon wafer comprising a {100} surface at an angle where {111} planes intersect the {100} surface parallel and perpendicular to the wafer; etching the mono-crystalline silicon wafer to expose an {111} plane and a second plane to provide a blade edge having between about a 20 degree included blade angle and about a 35 degree included blade angle; applying a hard coating on the blade edge; providing a radius of curvature of the blade edge between about 20 nanometers and about 100 nanometers after deposition of the hard coating; applying a soft coating on the blade edge; and removing the razor blade from the mono-crystalline silicon wafer. | 12-17-2015 |
| 20160001456 | METHOD OF TREATING RAZOR BLADE CUTTING EDGES - The present invention relates to razor blade cutting edges and methods of producing edges exhibiting improved shave performance longevity and lower cutting forces. Conventional razor blades have increasing cutting forces with use due to the outer coating wear and adhesion loss. Blade edges produced according to the novel process exhibit significantly lower cutting forces when subjected to wool felt cutting shaving simulation, which correlates to more comfortable shaves initially and over the life of the blades. The present invention treats razor blade edges having a first adherent polyfluorocarbon coating with a first solvent to partially remove the polyfluorocarbon coating, adds a second polyfluorocarbon coating, heats, and treats the blade edge with a second solvent providing a final blade edge having a thin, uniform polyfluorocarbon coating. Preferred solvents include perfluoroalkanes, perfluorocycloalkanes, and perfluoroaromatic compounds having a critical temperature or boiling point above the dissolution temperature for the polyfluorocarbon in the solvent. | 01-07-2016 |
| 20160096281 | Method of Shaping a Surface Coating on a Razor Blade Using Centrifugal Force - A method for shaping a coating on a razor blade is provided. The method includes the steps of: a) providing a razor blade having a tip end defined by at least one tip surface; b) applying a surface coating having a first thickness on at least one tip surface; and c) shaping the applied surface coating on the at least one tip surface to have a second thickness using a centrifuge, which second thickness is less than the first thickness. | 04-07-2016 |
| 20160096282 | Method of Shaping a Surface Coating on a Razor Blade - A method for shaping a coating on a razor blade, and a razor blade produced using the aforesaid method, are provided. The method includes the steps of a) providing a razor blade having a tip end defined by at least one tip surface and a cutting edge; b) applying a surface coating having a first thickness on at least one tip surface; and c) shaping the surface coating on the at least one tip surface to have a second thickness using a fluid stream, which second thickness is less than the first thickness. | 04-07-2016 |
| 20220134588 | RAZOR BLADES WITH CHROMIUM BORIDE-BASED COATINGS - This invention relates to a novel application of a compound of chromium and boron, or the application of chromium boride-based coatings (e.g., CrB | 05-05-2022 |
| 030346540 | Including metallurgical characteristic | 8 |
| 20100011595 | RAZOR BLADES - A razor blade having a substrate with a cutting edge being defined by a sharpened tip. The substrate has a thickness of between about 1.3 and 1.6 micrometers measured at a distance of four micrometers from the blade tip, a thickness of between about 2.2 and 2.7 micrometers measured at a distance of eight micrometers from the blade tip, a thickness of between about 3.8 and 4.9 micrometers measured at a distance of sixteen micrometers from the blade tip, a ratio of thickness measured at four micrometers from the blade tip to the thickness measured at eight micrometers from the blade tip of at least 0.55 and a ratio of thickness measured at four micrometers from the blade tip to the thickness measured at sixteen micrometers from the blade tip of at least 0.30. | 01-21-2010 |
| 20100024222 | BLADE MEMBER - In a cutting edge of a razor blade, a non-nitrided layer containing Ti, Al, and Cr is formed on opposite surfaces of a base plate as a portion of a coating layer. A remaining layer containing Ti, Al, Cr, and N is formed on opposite surfaces of the non-nitrided layer as a portion of a nitrided layer of the coating layer. A surface layer containing Ti, Al, Cr, and N is formed on opposite surfaces of the remaining layer as a portion of the nitrided layer of the coating layer. A fluororesin layer is formed on opposite surfaces of the surface layer with a bonding layer containing Cr and Al in between. The coating layer including the non-nitrided layer and the nitrided layer further improves the cutting edge, enhances cutting performance of the cutting edge, and maintains the enhanced cutting performance to improve the durability of the cutting edge. | 02-04-2010 |
| 20100287781 | Razor Blade Coating - A razor blade that includes a substrate with a cutting edge, the substrate includes (a) a thin-film of a first material disposed thereon, the thin-film having a thickness less than 1 μm; (b) a mixed nitride-thin-film interregion disposed at or adjacent a surface of the thin-film and a surface of the substrate; and (c) a nitride region disposed adjacent the mixed nitride-thin-film interregion. | 11-18-2010 |
| 20110010950 | Atomic Layer Deposition Coatings on Razor Components - A novel application of the atomic layer deposition (ALD) process for producing a conformal coating on a razor blade is disclosed where a uniform, conformal, dense coating is deposited on an entire surface of a blade flank and at least a portion or an entire surface of a blade body. To improve the shaving ability of the coated blade edge (e.g., decrease the blade tip radius), the ALD-produced coating may be etched during, after, or both during and after, the ALD process. | 01-20-2011 |
| 20110283550 | CUTTING MEMBERS FOR SHAVING RAZORS - Cutting members for razors are provided that have been subjected to a localized heat-treating process, e.g., application of laser energy. In some cases, the cutting members include a bent portion, and the localized heat-treating process is used to enhance ductility and thereby facilitate formation of the bent portion. | 11-24-2011 |
| 20130014395 | RAZOR BLADES HAVING A LARGE TIP RADIUS - A razor blade including a substrate with a coating joined to the substrate defining a coated blade. The coated blade including a cutting edge being defined by a blade tip having a tip radius of from 500 to 1500 angstroms. The coated blade having a thickness of between 0.3 and 0.5 micrometers measured at a distance of 0.25 micrometers from the blade tip, a thickness of between 0.4 and 0.65 micrometers measured at a distance of 0.5 micrometers from the blade tip, a thickness of between 0.61 and 0.71 micrometers measured at a distance of 1 micrometer from the blade tip, a thickness of between 0.96 and 1.16 micrometers measured at a distance of 2 micrometers from the blade tip, and a thickness of between 1.56 and 1.91 micrometers measured at a distance of 4 micrometers from the blade tip. | 01-17-2013 |
| 20130014396 | RAZOR BLADES HAVING A WIDE FACET ANGLE - A razor blade including a substrate with a coating joined to the substrate defining a coated blade. The coated blade including a cutting edge being defined by a blade tip having a tip radius of from 50 to 350 angstroms. The coated blade having a pair of first facets extending from the blade tip and a pair of second facets extending from the respective first facets, a facet angle from 90° to 135°, a facet width from 0.38 micrometers to 0.65 micrometers a wedge angle from 5° to 30°, and a thickness of between 0.8 and 1.5 micrometers measured at a distance of 1 micrometer from the blade tip. | 01-17-2013 |
| 20150328789 | RAZOR BLADES - A razor blade having a substrate with a cutting edge being defined by a sharpened tip. The substrate has thicknesses of 1.60-1.75 micrometers and 9.25-10.00 micrometers measured at a distance of four and forty micrometers from the blade tip, respectively. A ratio of the thickness measured at four micrometers to the thickness measured at forty micrometers is between 0.165-0.185. The substrate thickness is about 2.70-3.00 micrometers at eight micrometers from the blade tip, about 4.44-5.00 micrometers at sixteen micrometers from the blade tip with a thickness ratio measured at four micrometers and eight micrometers between 0.56-0.62, and a thickness ratio measured at four micrometers and sixteen micrometers between 0.32-0.40. The blade edge shape is defined by equation w=ad | 11-19-2015 |
| 030346550 | Including details of cutting edge | 2 |
| 20100107425 | Razor Blade and Method of Manufacture - A method for making a razor blade having a bent portion is disclosed. The method includes: providing an elongated strip of stainless steel that can be 0.076 mm thick; hardening the strip; providing a cutting edge along an edge of the strip and providing coating(s) on the cutting edge. The stainless steel has a carbon content preferably between 0.45% and 0.55% by weight. The strip is separated lengthwise into discrete razor blades. The bent portion of the razor blade is then formed using a swivel bending process. When the razor blade is bent to define an included angle of 90 degrees between planar regions adjacent the bent portion and an inner surface having a radius about 0.3-0.35 mm, the outer surface of the bent portion is free from macro-cracks. | 05-06-2010 |
| 20130283624 | CERAMIC CUTTING BLADES - The present invention generally relates to blades for utility knives, craft knives, box cutters, and other cutting tools. Specifically, this invention relates to cutting blades manufactured from ceramics. | 10-31-2013 |
| 030346580 | Composite razor blade | 5 |
| 20100319204 | METHOD OF FORMING A FUNCTIONAL RAZOR CARTRIDGE AND A FUNCTIONAL RAZOR CARTRIDGE - A method of forming a functional razor cartridge for repeated shaving comprises rapid prototyping a housing of a razor cartridge. The housing has a front wall, a rear wall and opposing side walls disposed transverse to and between said front and rear walls. The method further comprises loading a metal insert with one or more elongate blade assemblies and disposing the metal insert in the housing such that the one or more blade assemblies extend between the opposing side walls of the housing. | 12-23-2010 |
| 20110203120 | RAZOR CARTRIDGE ASSEMBLY - The invention discloses a novel razor cartridge including a housing having a top, front and back areas, and a bottom, and a plurality of posts each having an end portion extending towards the housing bottom and at least one blade disposed in the housing. Each blade includes a cutting edge and a bottom portion having front and back sides wherein the bottom portion of the blade is disposed adjacent at least one of the plurality of posts. The posts are desirably made of plastic. The end portions of the posts are crushed to provide contact and support to the front and/or back side of the bottom portion of the blades in the housing. The crush force may be up to about 100 lbs-force and the posts are reduced in height by about 20% to about 95%. The crushed posts retain the blades in the housing restricting fore and aft blade movement. | 08-25-2011 |
| 20120102761 | HAIR REMOVAL CARTRIDGE WITH ELONGATED RECESS - A hair removal cartridge having a housing, a cap, and at least one blade mounted to the housing. The blade has a blade edge in front of the cap. A guard is in front of the blade. The guard defines an elongated recess having an overall width extending parallel to the blade that is 70% to 100% of an overall width of the guard. | 05-03-2012 |
| 030346590 | Interfitting sections | 2 |
| 20090211103 | Cutter assembly and method of producing same - A cutter assembly for a dry shaver, comprising an elongate carrier member ( | 08-27-2009 |
| 20130008036 | RAZOR BLADE ASSEMBLY - There is provided in a preferred embodiment of the present invention a razor blade assembly having two plastic blades affixed to a central metal core. Each blade includes a blade edge and a connector for connecting to a connection slot in the metal core. | 01-10-2013 |
| 030346610 | Apertured, notched or lugged | 2 |
| 20090288304 | RAZOR BLADE UNIT WITH CUTTING EDGE SUPPORT - A razor blade unit including a blade housing to hold at least one blade with a cutting edge, and a cover connected to the blade housing. The cover faces the back edges of the blades, i.e., the edges opposite from the cutting edges. The blade housing has positioning notches to support the cutting edges. In addition, the cover can have recesses to support the back edges of the blades and an elastic component, which exerts a pressing force on the back edges of the blades. | 11-26-2009 |
| 20160039104 | Safety razor blade equipped with multiple protuberances - When two conventional safety razor double-edged blades are superposed on top of each other, there is no space in between them to pass the shaving residues. The presently invented safety razor double-edged blade is equipped with several spaced protuberances on its surface. When two of these present invented blades are overlapped, there is a space between them to pass the shaving residues to be rinsed away by running water. Therefore two, three or more of them can be superposed on a single razor blade holder to allow the user to experience all the benefits of a multi-blade razor cartridge in a safety razor blade system. | 02-11-2016 |
