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, Kumars Sakizadeh | 1989-11-28 |
| 4795697 | Stabilization of ketazine dyes | Kim M. Vogel, Roger A. Mader | 1989-01-03 |