Issued Patents All Time
Showing 1–25 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11925823 | System for regulating the dispensing of commercial aircraft passenger oxygen supply | — | 2024-03-12 |
| 10369389 | System for regulating the dispensing of commercial aircraft passenger oxygen supply | — | 2019-08-06 |
| 9616256 | Breathing mask and regulator for aircraft | Thomas K. McDonald, Mark A. Oswald, Bryan N. Rogers, Raymond P. Feith | 2017-04-11 |
| 9468780 | Oxygen conservation system for commercial aircraft | — | 2016-10-18 |
| 8689790 | Oxygen conservation system for commercial aircraft | — | 2014-04-08 |
| 8640702 | System for regulating the dispensing of commercial aircraft passenger oxygen supply | — | 2014-02-04 |
| 8496005 | Breathing mask and regulator for aircraft | Thomas K. McDonald, Mark A. Oswald, Bryan N. Rogers, Raymond P. Feith | 2013-07-30 |
| 8176917 | Oxygen conservation system for commercial aircraft | — | 2012-05-15 |
| 7836886 | Breathing mask and regulator for aircraft | Thomas K. McDonald, Mark A. Oswald, Bryan N. Rogers, Raymond P. Feith | 2010-11-23 |
| 7784463 | Oxygen conservation system for commercial aircraft | — | 2010-08-31 |
| 7588032 | Oxygen conservation system for commercial aircraft | — | 2009-09-15 |
| 6866794 | Strontium peroxide catalyzed oxygen generating compositions | Yunchang Zhang | 2005-03-15 |
| 6464757 | Filter for chemical oxygen generators | Yunchang Zhang, Michael J. Brumely, John E. Ellison, Girish S. Kshirsagar | 2002-10-15 |
| 6416720 | Emergency oxygen supply system for passengers in aircraft | — | 2002-07-09 |
| 6352652 | Low temperature sensitivity oxygen generating compositions | Yunchang Zhang | 2002-03-05 |
| 6296689 | Filter for chemical oxygen generators | Yunchang Zhang, Michael J. Brumely, John E. Ellison, Girish S. Kshirsagar | 2001-10-02 |
| 6264896 | Oxygen generating compositions | Yunchang Zhang | 2001-07-24 |
| 6231816 | Low temperature sensitivity oxygen generating compositions | Yunchang Zhang | 2001-05-15 |
| 6193907 | Oxygen generating formulation with high structural integrity | Yunchang Zhang, Girish S. Kshirsagar | 2001-02-27 |
| 6143196 | Oxygen generating formulation with high structural integrity | Yunchang Zhang, Girish S. Kshirsagar | 2000-11-07 |
| 6126854 | Oxygen generating compositions | Yunchang Zhang | 2000-10-03 |
| 6071329 | Filter for chemical oxygen generators | Yunchang Zhang, Michael J. Brumely, John E. Ellison, Girish S. Kshirsagar | 2000-06-06 |
| 6054067 | Low temperature sensitivity oxygen generating compositions | Yunchang Zhang | 2000-04-25 |
| 6030583 | Oxygen generating compositions | Girish S. Kshirsagar, Yunchang Zhang | 2000-02-29 |
| 6007736 | Oxygen generating compositions catalyzed by copper and nickel oxides | Yunchang Zhang, Girish S. Kshirsagar | 1999-12-28 |