Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4865940 | Photographic recording material | Karl-Wilhelm Schranz | 1989-09-12 |
| 4847179 | Photographic dye diffusion transfer process and color photographic recording material suitable for this process | Immo Boie, Manfred Peters, Wolfgang Himmelmann, Thomas Kaluschke, Kaspar Wingender +1 more | 1989-07-11 |
| 4840871 | Color photographic heat development process | Manfred Peters, Hans hlschlager, Thomas Kaluschke, Kaspar Wingender, Immo Boie | 1989-06-20 |
| 4816372 | Heat development process and color photographic recording material suitable for this process | Manfred Peters | 1989-03-28 |
| 4810628 | Color photographic recording material capable of being developed by heat treatment | Karl-Wilhelm Schranz | 1989-03-07 |