Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885272 | Thiadiazolyl-azo-pyrazole yellow dye-donor element for thermal dye transfer | Derek D. Chapman | 1989-12-05 |
| 4866029 | Arylidene pyrazolone dye-donor element for thermal dye transfer | Steven Evans | 1989-09-12 |
| 4862887 | Heart catheter | Eberhard Unsoeld, Heinz Ruesch, Klaus Schmitt | 1989-09-05 |
| 4853366 | Pyrazolidinedione arylidene dye-donor element for thermal dye transfer | Steven Evans, Donald R. Diehl | 1989-08-01 |
| 4839336 | Alpha-cyano arylidene pyrazolone magenta dye-donor element for thermal dye transfer | Steven Evans | 1989-06-13 |