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| Number | Title | Issue Date |
| 7712222 | Composite utility blade, and method of making such a blade A composite utility blade and method of making such a blade involves butt joining a high speed or tool steel wire to a front edge of an alloy steel backing strip. The wire defines a predetermined cross-sectional shape that substantially corresponds to the cross-sect... | 05/11/2010 |
| 7357052 | Zirconia based blades and foils for razors and a method for producing same Stabilized or partially stabilized zirconia paste may be screen printed onto hydrophilic plastic film in the form of a mesh. On firing, this becomes a very sharp foil for electric razors with excellent wear and flexibility characteristics. Stabilized or partially st... | 04/15/2008 |
| 7354629 | Method of forming a protective film and a magnetic recording medium having a protective film formed by the method A method of forming a protective film that restrains gas adsorption while preserving durability and corrosion resistance of a plasma CVD carbon film is disclosed. A protective film of a slide-resistant member is deposited by means of a plasma CVD method using a raw ... | 04/08/2008 |
| 7284461 | Colored razor blades Colored razor blades are provided. Methods for manufacturing such blades are also provided, including methods involving subjecting a blade material to a hardening process; and, during the hardening process, oxidizing the blade material to form an oxide layer on the ... | 10/23/2007 |
| 7204180 | Apparatus for cutting plastic profiles An apparatus for cutting plastic profiles includes a knife which is guided transversally to the profile, the knife including a cutting section and a holding section, the cutting section defining a guide portion, a transition portion, and a blade portion defining a t... | 04/17/2007 |
| 7124511 | Razor blade A razor blade is provided, which achieves improved safety in use and reduced cutting resistance to an object to be cut such as beard and hair, as compared with conventional razor blades. This razor blade can be obtained by using, as a silicon thin sheet, a single cr... | 10/24/2006 |
| 7059054 | Cutting blades having pointed tip, ultra-sharp edges, and ultra-flat faces An apparatus and method for a cutting blade having a pointed tip and ultra-flat faces that intersect at ultra-sharp edges. The cutting blade is batch-fabricated on a standard {100} semiconductor mono-crystalline silicon wafer using conventional anisotropic wet etchi... | 06/13/2006 |
| 7060367 | Cutting blade and method of producing the same A blade with improved sharpness and durability is disclosed. The blade includes a base plate having an edge and a coating layer for coating the edge. The coating layer is formed of a material handling metal, and a tip of the coating layer is sharpened. It is preferr... | 06/13/2006 |
| 6887586 | Sharp-edged cutting tools Sharp-edged cutting tools and a method of manufacturing sharp-edged cutting tools wherein at least a portion of the sharp-edged cutting tool is formed from a bulk amorphous alloy material are provided. ... | 05/03/2005 |
| 6763593 | Razor blade material and a razor blade Provided is a razor blade material which has excellent high hardness, high strength and high corrosion resistance. The material is made of an Fe-base alloy containing, by mass %, not less than 0.5% carbon, 9.0 to 14.0% Cr and from more than zero to 8.0% Mo, wherein ... | 07/20/2004 |
| 6708749 | Apparatus for stripping a coating from an optical fibre Apparatus for stripping a coating from a coated optical fiber. The apparatus has a pair of opposed blade holders, one end of each blade holder being adapted to releasably receive and retain a blade. The opposed ends of the blade holders are joined with a flexible me... | 03/23/2004 |
| 6684513 | Razor blade technology A razor blade including a substrate with a cutting edge defined by a sharpened tip and adjacent facets, a layer of hard coating on the cutting edge, an overcoat layer of a chromium containing material on the layer of hard carbon coating, and an outer laye... | 02/03/2004 |
| 6354008 | Sliding member, inner and outer blades of an electric shaver and film-forming method A sliding member having a sliding surface for sliding contact with a cooperative member is disclosed. A protective film is deposited not only on the sliding surface but also a surface region immediately adjacent the sliding surface such that a ratio d1/d2... | 03/12/2002 |
| 6327784 | Method of manufacturing a cutting member having an auxiliary layer The invention relates to a method of manufacturing a cutting member (3). According to the method, a single side 9 of a carrier 1 of the cutting member is provided with an auxiliary layer (11). The carrier is provided with a cutting edge (7) by means of an... | 12/11/2001 |
| 6273990 | Method and apparatus for removing a protective coating from an optical fiber and inhibiting damage to same A method for mechanically stripping the protective coating from a silica or glass optical fiber using a polymeric or soft metal blade having a hardness less than that of the glass optical fiber but greater than the protective coating. The blade is prefera... | 08/14/2001 |
| 6260280 | Knife with ceramic blade A knife with ceramic blade including a body portion having a lower end. The lower end has a generally triangular lower portion extending downwardly therefrom. The lower portion has a lower end forming an apex. The apex has a channel formed therein extendi... | 07/17/2001 |
| 6237444 | Safety razor blade tool A safety razor blade tool comprises a substantially rectangular, single-edged safety razor blade having a cutting edge and an opposing non-cutting edge and a thermoplastic protective cover fixedly attached to the non-cutting edge. The protective cover is ... | 05/29/2001 |
| 6156435 | Chemical vapor deposition of fluorocarbon polymer thin films Provided are methods for forming a fluorocarbon polymer thin film on the surface of a structure. In one method, a monomer gas is exposed to a source of heat having a temperature sufficient to pyrolyze the monomer gas and produce a source of reactive CF | 12/05/2000 |
| 6151786 | Ceramic blade Ceramic blade (1) of a cutting tool, in particular a knife, with a cutting edge (10) and a rounded off upper edge (12) running opposite to the cutting edge (10). The rounded off upper edge (12) makes possible, in comparison to the conventional sharp-edged... | 11/28/2000 |
| 5943781 | Safety razor blade tool A safety razor blade tool comprises a substantially rectangular, single-edged safety razor blade having a cutting edge and an opposing non-cutting edge and a thermoplastic protective cover fixedly attached to the non-cutting edge. The protective cover is ... | 08/31/1999 |
| 5857260 | Cutter combination for an electric shaver A cutting device for an electric shaver comprising an outer cutter and a plurality inner blades that are made of a ferrous alloy comprising a substrate of an Fe-Cr stainless steel and a hardened layer of improved hardness and wear resistance. The substrat... | 01/12/1999 |
| 5795648 | Method for preserving precision edges using diamond-like nanocomposite film coatings A method for preserving the precision-edges of a precision-edged substrate by applying to a the substrate a corrosion resistant coating comprising a diamond-like solid state material having interpenetrating atomic scale networks comprising a first diamond... | 08/18/1998 |
| 5771589 | Safety razor blade tool A safety razor blade tool includes a substantially rectangular safety razor blade having a cutting edge and an opposing non-cutting edge, and a rubberized thermoplastic protective cover fixedly attached to the non-cutting edge. The protective cover has an... | 06/30/1998 |
| 5669144 | Razor blade technology A razor blade includes a substrate with a wedge-shaped edge at a distance of forty micrometers from the sharpened tip, and a layer of diamond or diamond-like material defined by facets that have an included angle of less than seventeen degrees that has a ... | 09/23/1997 |
| 5630275 | Multi-blade razor head with improved performance The various embodiments of the present invention are directed to razor heads having a plurality of cutting edges wherein the physical characteristics of the cutting edges are different from each other. Among the items which may be varied in the blades are... | 05/20/1997 |
| 5497550 | Shaving system A shaving system with a blade member with a cutting edge of wedge shape that is defined by main facets with an included facet angle in the range of 10°-17° in the region forty micrometers from the cutting edge. The blade is mounted between leading and t... | 03/12/1996 |
| 5488774 | Cutting edges An improved cutting instrument including a wedge-shaped cutting edge such as a razor blade having in the region of its ultimate edge an adherent low friction coating of diamond or a diamondlike carbon.... | 02/06/1996 |
| 5295305 | Razor blade technology A razor blade includes a substrate with a wedge-shaped edge, an interlayer of material selected from the group consisting of silicon, silicon carbide, vanadium, tantalum, nickel, niobium, and niobium-molybdenum alloy and alloys of such materials on the ti... | 03/22/1994 |
| 5232568 | Razor technology A razor blade includes a substrate with a wedge-shaped edge, a layer of molybdenum on the tip and flanks of the wedge-shaped edge, the thickness of the molybdenum layer preferably being in the range of about 50-500 angstroms, and a layer of diamond or dia... | 08/03/1993 |
| 5170563 | Shaving unit for a shaver and shaver comprising such a shaving unit A shaving unit for a shaver is provided comprising a shear plate and a cutting member, one of the cooperating surfaces being covered with a friction-reducing layer comprising carbon and metal in an atomic ratio between 50.1/49.9 and 99.9/0.1.... | 12/15/1992 |
| 5077901 | Ceramic blades and production methodology therefor A ceramic cutting blade includes a cutter portion having first and second side edges which converge at a distal acute angle to form a distal cutting tip and a cutting edge formed by first and second cutting faces oriented at a bevel angle. At least one of... | 01/07/1992 |
| 5018274 | Safety razor blade A blade for use in a safety razor is manufactured by providing a block of green or uncured ceramic material. The block is in the form of a honeycomb structure having a plurality of substantially parallel cells formed therein and a portion is sliced and re... | 05/28/1991 |
| 4847168 | Slicing saw blade A slicing saw blade comprising a substrate disc and a blade edge consisting essentially of a ultra-hard material deposited along a peripheral edge of said substrate disc, said substrate disc being made of a steel consisting essentially of, by weight, not ... | 07/11/1989 |
| 4765060 | Disposable shaver head A disposable head adapted for one-time use as an attachment to an electric shaver for cutting hair of a patient close to the skin in preparation for surgery has a lower portion comprising a lower plastic member adapted for engagement with a portion of the... | 08/23/1988 |
| 4563814 | Disposable clipper head A disposable hair clipping head assembly adapted for attachment to an electric clipper is disclosed. The assembly is characterized by a novel two-piece construction including fixed and movable members formed of synthetic plastic material. The fixed member... | 01/14/1986 |
| 4453987 | Method for producing edged tools A method for producing an edged tool which has an excellent cutting ability and durability, which comprises immersing an edged-tool material in a molten-salt bath containing a carbide-forming element, such as a Va Group element, titanium, chromium or mang... | 06/12/1984 |
| 4330576 | Razor blade coating and method A razor blade having a fluorinated polymer coating over its cutting edge and a method for its preparation. A hydrocarbon polymer is disposed on the cutting edge, which polymer after appropriate sintering is brought into contact with a fluorine-rich atmosp... | 05/18/1982 |
| 4291463 | Water-soluble shaving aid for razor blades A solid water-soluble lubricating shaving aid is provided as an adherent coating on a razor blade. The solid coating contains polyethylene oxide as a lubricant.... | 09/29/1981 |
| 4259126 | Method of making razor blade strip from austenitic steel This invention provides a steel alloy, for use for razor blades, the ranges of composition of which are given in the table below, the first column giving the maximum range for the alloy elements and impurities (the balance being iron), the second column g... | 03/31/1981 |
| 4201599 | Restoration and protection of cutting surfaces A method of restoring and/or protecting a cutting surface so that it has an increased effective life comprises applying to the cutting surface a chlorhexidine compound dispersed or dissolved in a carrier therefor. Novel compositions for use for this purpo... | 05/06/1980 |
