Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9027443 | Method of making a razor | Andrew Zhuk, Weili Yu, Neville Sonnenberg, Kevin Powell, Yiqian Eric Liu +5 more | 2015-05-12 |
| 7882640 | Razor blades and razors | Andrew Zhuk, Weili Yu, Neville Sonnenberg, Kevin Powell, Yiqian Eric Liu +5 more | 2011-02-08 |
| 7448135 | Multi-blade razors | Andrew Zhuk, Weili Yu, Neville Sonnenberg, Kevin Powell, Yiqian Eric Liu +5 more | 2008-11-11 |
| 7247249 | Method of treating razor blade cutting edges | — | 2007-07-24 |
| 6866894 | Razor blade technology | Michael J. Paretchan, Colin Clipstone, Steve S. Hahn, Neville Sonnenberg, Charles S. White +2 more | 2005-03-15 |
| 6228428 | Coating cutting edges with fluorocarbon polymers | — | 2001-05-08 |
| 5985459 | Method of treating razor blade cutting edges | Michael J. Kwiecien, Charles R. Parent, John L. Howard | 1999-11-16 |
| 5645894 | Method of treating razor blade cutting edges | — | 1997-07-08 |
| 5477756 | Method of applying polymers to razor blade cutting edges | Manohar S. Grewal | 1995-12-26 |
| 5263256 | Method of treating razor blade cutting edges | — | 1993-11-23 |
| 5101565 | Razor blades | — | 1992-04-07 |