Patent ID: 9149944
Filing Date: 2015-10-06
Classification: B23P,B26B,Y10T

Abstract:
1. A method of making a razor blade assembly for a razor cartridge, comprising the steps of: a) providing a razor blade comprising a stainless steel of a first composition, the razor blade having a first side and a cutting edge extending along a front edge thereof, the razor blade further having been processed to effect a martensitic transformation thereof to harden the razor blade; b) providing a chromium oxide layer on the first side by a thermal oxidation process of free chromium, defined as chromium of the stainless steel unreacted with carbon of the stainless steel, at the surface of the stainless steel to enhance corrosion resistance; and c) permanently joining an inter-blade guard to the first side of the razor blade, the inter-blade guard comprising a stainless steel of a second composition and including a surface adapted to contact a skin surface of a user during a normal use of the razor cartridge including the razor blade assembly.