# US 10,500,745 B2 · Razor blade, razor head, and method of manufacture > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,500,745 B2 - Document ID: US10500745B2 - Status: Granted - Kind: B2 - Application number: 15/804,056 - Filed: 2017-11-06 - Published: 2018-03-08 - Granted: 2019-12-10 - Earliest claimed: 2011-10-06 - Assignees: Bic-Violex SA - Applicants: Bic-Violex S.A. - Inventors: Vasileios Davos; Vassilis Papachristos; Dimitrios Efthimiadis; Panagiotis Zafiropoulos; Nikolaos Skounakis; Ioannis Komianos; Michalis Karoussis; Anastasios Papageorgiou - Web page: https://patentgrep.com/patent/US10500745B2 ## CPC - B26B 21/14: Safety razors with one or more blades arranged transversely to the handle - B26B 21/227: {with blades being resiliently mounted in the changeable unit} - B26B 21/4012: {Housing details, e.g. for cartridges} - B26B 21/4031: {characterised by special geometric shaving parameters, e.g. blade span or exposure} - B26B 21/4068: {Mounting devices; Manufacture of razors or cartridges (B26B21/528 takes precedence)} - B26B 21/565: {Bent razor blades; Razor blades with bent carriers} - B26B 21/58: characterised by the material - Y10T 225/10: Methods - B26B: HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR (for harvesting A01D; for horticulture, for forestry A01G; for butchering or meat treatment A22; for manufactering or repairing footwear A43D; nail clippers or cutters A45D29/02; kitchen equipment A47J; {vegetable slicers, julienne cutters and similar devices and holders therefor, B26D3/28}; for surgical purposes A61B; for metal B23D; cutting by abrasive fluid jets B24C5/02; plier-like tools with cutting edges B25B7/22; pincers B25C11/02; handles for hand implements, in general B25G; guillotine-type cutters B26D; {perforating by non-mechanical means, e.g. by fluid jet, B26F1/26}; for erasing B43L19/00; for textile materials D06H) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract An integrally formed rigid razor blade has, in cross-section transverse to a longitudinal axis, a cutting edge portion, a base portion, and a bent portion. The cutting edge portion extends along a cutting edge portion axis and has a cutting edge at one end. The base portion extends along a base portion axis and has a rear edge at one end. The bent portion is intermediate the cutting edge portion and the base portion. The rear edge of the base portion is serrated along the longitudinal axis. The serrations have a height of between 0.13 millimeters and 0.32 millimeters. ## Claims ### Claim 1 An integrally formed rigid razor blade having, in cross-section transverse to a longitudinal axis of the razor blade: a cutting edge portion extending along a cutting edge portion axis, and having a cutting edge at one end, the cutting edge portion is defined by convergent faces which taper towards the cutting edge at an angle of between 10 degrees and 30 degrees; a base portion extending along a base portion axis, and having a serrated rear edge at one end; a bent portion intermediate the cutting edge portion and the base portion; and wherein the razor blade being formed from a martensitic stainless steel consisting essentially of the following components, in weight: between 0.50% and 0.75% of carbon, between 12.7% and 13.7% Chromium, between 0.45% and 0.75% Manganese, between 0.20% and 0.50% silicon, balanced iron, and traces of Molybdenum. ### Claim 2 (depends on 1) The blade according to claim 1, further comprising: an angle of between 108 degrees and 112 degrees formed between the cutting edge portion axis and the base portion axis. ### Claim 3 (depends on 1) The blade according to claim 1, wherein the base portion further comprises: an inner face and an opposed outer face, the inner face and the opposed outer face of the base portion defining a thickness of between 0.095 millimeters and 0.105 millimeters. ### Claim 4 (depends on 1) A shaver comprising: a razor cartridge; the rigid razor blade of claim 1 connected to the razor cartridge such that the rigid razor blade is movable within the razor cartridge. ### Claim 5 (depends on 1) The blade according to claim 1, wherein the serrations of the serrated rear edge having a height of between 0.13 and 0.32 millimeters. ### Claim 6 An integrally formed rigid razor blade having, in cross-section transverse to a longitudinal axis of the razor blade: a cutting edge portion extending along a cutting edge portion axis, and having a cutting edge at one end; the cutting edge portion is defined by convergent faces which taper towards the cutting edge at an angle of between 10 degrees and 30 degrees; a base portion extending along a base portion axis, and having a rear edge at one end; a bent portion intermediate the cutting edge portion and the base portion; and wherein the rigid razor blade is formed from a martensitic stainless steel consisting essentially of the following components, in weight: between 0.50% and 0.75% of carbon, between 12.7% and 13.7% Chromium, between 0.45% and 0.75% Manganese, between 0.20% and 0.50% silicon, balanced iron, and traces of Molybdenum. ### Claim 7 (depends on 6) The blade according to claim 6, wherein the rear edge of the base portion is serrated along the longitudinal axis, the serrations of the serrated rear edge having a height of between 0.13 and 0.32 millimeters. ### Claim 8 (depends on 6) The blade according to claim 6, further comprising: an angle of between 108 degrees and 112 degrees formed between the cutting edge portion axis and the base portion axis. ### Claim 9 (depends on 6) The blade according to claim 6, wherein the base portion further comprises: an inner face and an opposed outer face, the inner face and the opposed outer face of the base portion defining a thickness of between 0.095 millimeters and 0.105 millimeters. ### Claim 10 (depends on 6) A shaver comprising: a razor cartridge; the rigid razor blade of claim 6 connected to the razor cartridge such that the rigid razor blade is movable within the razor cartridge.