Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5803958 | Black ink jet ink composition | Boris J. Katsen, Richard S. Himmelwright, Barbara Jones Stewart | 1998-09-08 |
| 5746817 | Ink jet ink composition | Boris J. Katsen, Richard S. Himmelwright, Barbara Jones Stewart | 1998-05-05 |