Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6464757 | Filter for chemical oxygen generators | Yunchang Zhang, James C. Cannon, John E. Ellison, Girish S. Kshirsagar | 2002-10-15 |
| 6296689 | Filter for chemical oxygen generators | Yunchang Zhang, James C. Cannon, John E. Ellison, Girish S. Kshirsagar | 2001-10-02 |
| 6071329 | Filter for chemical oxygen generators | Yunchang Zhang, James C. Cannon, John E. Ellison, Girish S. Kshirsagar | 2000-06-06 |