Marchev; Krassimir Grigorov
Patent Applications and Registrations
Patent applications and USPTO patent grants for Marchev; Krassimir Grigorov.The latest application filed is for "strengthened razor blade".
- Marchev; Krassimir Grigorov - Sudbury MA
- Marchev; Krassimir Grigorov - Sunbury MA
| Patent | Date |
|---|---|
| Strengthened razor blade Grant 9,855,665 - Marchev , et al. January 2, 2 | 2018-01-02 |
| Strengthened Razor Blade App 20170129117 - MARCHEV; KRASSIMIR GRIGOROV ; et al. | 2017-05-11 |
| Strengthened razor blade Grant 9,598,761 - Marchev , et al. March 21, 2 | 2017-03-21 |
| Razors and razor cartridges Grant 9,248,579 - DePuydt , et al. February 2, 2 | 2016-02-02 |
| Razor blades Grant 9,079,321 - Claus , et al. July 14, 2 | 2015-07-14 |
| Thin Film Coating Of Blades App 20110209988 - Madeira; John ; et al. | 2011-09-01 |
| Process of forming a razor blade Grant 7,966,909 - Madeira , et al. June 28, 2 | 2011-06-28 |
| Strengthened Razor Blade App 20100299931 - Marchev; Krassimir Grigorov ; et al. | 2010-12-02 |
| Razor Blades App 20100011595 - Claus; Oliver H. ; et al. | 2010-01-21 |
| Razors And Razor Cartridges App 20100011590 - DePuydt; Joseph Allan ; et al. | 2010-01-21 |
| Thin film coating of blades App 20090025512 - Madeira; John ; et al. | 2009-01-29 |
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