Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5338516 | Chemical oxygen generator | Yunchang Zhang | 1994-08-16 |
| 5298187 | Non-toxic chemical oxygen generating compositions | Yunchang Zhang | 1994-03-29 |
| 5279761 | Chemical oxygen generating compositions containing LI202 | Yunchang Zhang | 1994-01-18 |