US 12,240,136 B2
Razor blade and composition for a razor blade
William Salvatore, Watertown, CT (US); and Yiming Xu, Milford, CT (US)
Assigned to Edgewell Personal Care Brands, LLC, Chesterfield, MO (US)
Appl. No. 17/432,235
Filed by Edgewell Personal Care Brands, LLC, Chesterfield, MO (US)
PCT Filed Jan. 8, 2020, PCT No. PCT/US2020/012701
§ 371(c)(1), (2) Date Aug. 19, 2021,
PCT Pub. No. WO2020/176163, PCT Pub. Date Sep. 3, 2020.
Claims priority of provisional application 62/811,694, filed on Feb. 28, 2019.
Prior Publication US 2022/0250266 A1, Aug. 11, 2022
Int. Cl. B26B 21/58 (2006.01); B21D 53/60 (2006.01); B26B 21/40 (2006.01); B26B 21/56 (2006.01); C21D 1/18 (2006.01); C21D 6/00 (2006.01); C21D 9/18 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/22 (2006.01)
CPC B26B 21/58 (2013.01) [B21D 53/60 (2013.01); B26B 21/4068 (2013.01); B26B 21/565 (2013.01); C21D 1/18 (2013.01); C21D 6/002 (2013.01); C21D 6/005 (2013.01); C21D 6/008 (2013.01); C21D 9/18 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/22 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A razor blade, comprising:
a first portion and a second portion, the first portion having a cutting edge at an exterior end thereof and being angled relative to the second portion by a bending process; and
a bent region intermediate the first portion and the second portion;
wherein the razor blade is a martensitic stainless steel consisting essentially of mainly iron and having by weight:
0.40 to 0.60% Carbon
0.30 to 0.55% Silicon
0.70 to 0.90% Manganese
15.0 to 14% Chromium
0.50 to 1.0% Molybdenum
0.03 to 0.2% Nitrogen
Sulphur in a range up to 0.02%
Phosphorus in a range up to 0.0025%, and
balance Iron.