Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877722 | Color photographic recording material developable by heat | Manfred Becker, Kaspar Wingender, Thomas Kaluschke, Sieghart Klotzer | 1989-10-31 |
| 4847179 | Photographic dye diffusion transfer process and color photographic recording material suitable for this process | Immo Boie, Wolfgang Himmelmann, Thomas Kaluschke, Gunther Schenk, Kaspar Wingender +1 more | 1989-07-11 |
| 4840871 | Color photographic heat development process | Hans hlschlager, Thomas Kaluschke, Kaspar Wingender, Gunther Schenk, Immo Boie | 1989-06-20 |
| 4840885 | Color photographic recording material for the dye diffusion transfer process | Gunter Helling, Helmut Reiff | 1989-06-20 |
| 4816372 | Heat development process and color photographic recording material suitable for this process | Gunther Schenk | 1989-03-28 |