Process of forming a razor blade
US7966909B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 25, 2007 |
| Grant date | Jun 28, 2011 |
| Priority date | — |
| Expiry date | Sep 1, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C14/3464
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present invention relates to a process for forming a razor blade. The process includes the steps of: a) providing a substrate, b) forming a wedge-shaped sharpened edge on the substrate that has an included angle of less than thirty degrees and a tip radius of less than 1,000 angstroms, c) placing the substrate in a vacuum chamber, d) placing a first solid target in the vacuum chamber, e) providing a gas to be ionized in the vacuum chamber, and f) generating ions from the first solid target by applying a negative voltage to the first solid target in pulses, the ions forming a thin film coating on the wedge-shaped sharpened edge on the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.