Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4737429 | Layered amorphous silicon imaging members | Joseph Mort, Frank Jansen, Koji Okumura, Steven J. Grammatica | 1988-04-12 |
| 4634647 | Electrophotographic devices containing compensated amorphous silicon compositions | Frank Jansen, Joseph Mort, Steven J. Grammatica, John C. Knights | 1987-01-06 |
| 4613556 | Heterogeneous electrophotographic imaging members of amorphous silicon and silicon oxide | Joseph Mort, Frank Jansen, Koji Okumura, Steven J. Grammatica | 1986-09-23 |
| 4544617 | Electrophotographic devices containing overcoated amorphous silicon compositions | Joseph Mort, Frank Jansen, Steven J. Grammatica | 1985-10-01 |