Witkus; Stephen Charles
Patent Applications and Registrations
Patent applications and USPTO patent grants for Witkus; Stephen Charles.The latest application filed is for "apparatus for testing a coefficient of friction and methods for same".
- Witkus; Stephen Charles - Northbridge MA
| Patent | Date |
|---|---|
| Handle for a razor Grant 11,285,630 - Lu , et al. March 29, 2 | 2022-03-29 |
| Apparatus for testing a coefficient of friction and methods for same Grant 11,150,177 - Lu , et al. October 19, 2 | 2021-10-19 |
| Handle for a razor Grant 11,130,247 - Lu , et al. September 28, 2 | 2021-09-28 |
| Handle for a razor Grant 10,940,598 - Lu , et al. March 9, 2 | 2021-03-09 |
| Apparatus For Testing A Coefficient Of Friction And Methods For Same App 20210018427 - Lu; Hong ; et al. | 2021-01-21 |
| Apparatus for testing a coefficient of friction and methods for same Grant 10,837,894 - Lu , et al. November 17, 2 | 2020-11-17 |
| Razor handle Grant D881,468 - Goeder , et al. | 2020-04-14 |
| Razor handle Grant D864,482 - Goeder , et al. Oc | 2019-10-22 |
| Handle for a razor Grant 10,414,058 - Lu , et al. Sept | 2019-09-17 |
| Razor cartridge guard structure Grant 10,363,674 - Witkus , et al. | 2019-07-30 |
| Apparatus For Testing A Coefficient Of Friction And Methods For Same App 20190094126 - Lu; Hong ; et al. | 2019-03-28 |
| Handle for a razor Grant 10,226,874 - Lu , et al. | 2019-03-12 |
| Razor handle grip Grant D837,452 - Goeder , et al. J | 2019-01-01 |
| Handle For A Razor App 20180043556 - Lu; Hong ; et al. | 2018-02-15 |
| Handle For A Razor App 20180043560 - Lu; Hong ; et al. | 2018-02-15 |
| Handle For A Razor App 20180043557 - Lu; Hong ; et al. | 2018-02-15 |
| Handle For A Razor App 20180043551 - Lu; Hong ; et al. | 2018-02-15 |
| Handle For A Razor App 20180043550 - Lu; Hong ; et al. | 2018-02-15 |
| Handle For A Razor App 20180043555 - Lu; Hong ; et al. | 2018-02-15 |
| Handle For A Razor App 20180043554 - Lu; Hong ; et al. | 2018-02-15 |
| Handle For A Razor App 20180043559 - Lu; Hong ; et al. | 2018-02-15 |
| Handle For A Razor App 20180043558 - Lu; Hong ; et al. | 2018-02-15 |
| Handle For A Razor App 20180043553 - Lu; Hong ; et al. | 2018-02-15 |
| Handle For A Razor App 20180043552 - Lu; Hong ; et al. | 2018-02-15 |
| Razor Cartridge Guard Structure App 20180021966 - Witkus; Stephen Charles ; et al. | 2018-01-25 |
| Razor cartridge guard structure Grant 9,802,328 - Witkus , et al. October 31, 2 | 2017-10-31 |
| Razor cartridge Grant D741,546 - Witkus , et al. October 20, 2 | 2015-10-20 |
| Razor cartridge Grant D741,013 - Witkus , et al. October 13, 2 | 2015-10-13 |
| Razor guard Grant D741,012 - Witkus , et al. October 13, 2 | 2015-10-13 |
| Razor Cartridge Guard Structure App 20150128424 - Witkus; Stephen Charles ; et al. | 2015-05-14 |
| Shaving Razor Cartridge App 20140000114 - Wester; Christian Reber ; et al. | 2014-01-02 |
| Shaving cartridge with supressed blade geometry Grant 8,448,339 - Walker, Jr. , et al. May 28, 2 | 2013-05-28 |
| Shaving cartridge guard for supporting skin Grant 8,413,334 - Walker, Jr. , et al. April 9, 2 | 2013-04-09 |
| Shaving Cartridge With Supressed Blade Geometry App 20120030948 - Walker, JR.; Vincent ; et al. | 2012-02-09 |
| Shaving Cartridge Guard For Supporting Skin App 20120030947 - Walker, JR.; Vincent Paul ; et al. | 2012-02-09 |
| Razor Cartridge Assembly App 20110203120 - Witkus; Stephen Charles | 2011-08-25 |
| Razor cartridge Grant D633,254 - Witkus February 22, 2 | 2011-02-22 |
| Razor cartridge Grant D630,797 - Witkus January 11, 2 | 2011-01-11 |
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