Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883747 | Color photothermographic elements | Duncan M. A. Grieve, Stephen S. Poon, Tran V. Thien, David C. Weigel | 1989-11-28 |
| 4816554 | Poly(amido methyl-benzazole) | Alan R. Katritzksy, Joel Swinson, Jerald K. Rasmussen, Larry R. Krepski, Steven M. Heilmann | 1989-03-28 |