Colored razor blades
US7284461B2 · kind B2 · utility
7Cited by
46References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2004 |
| Grant date | Oct 23, 2007 |
| Priority date | — |
| Expiry date | Aug 23, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D1/76
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
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 blade material. The method also includes quenching the blade material, after the oxidizing step, to initiate martensitic transformation of the blade material, and forming the hardened blade material into a razor blade, the oxide layer providing the razor blade with a colored surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.