Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4747637 | Externally retractable sunroof | Randy Williams | 1988-05-31 |
| 4575482 | Photographic silver dye bleach materials containing formyl-substituted azo compounds as image dyes | — | 1986-03-11 |
| 4521591 | Oil-soluble disazo dyes and their use in color-photographic recording materials for the silver dye bleach process | Gerald Jan | 1985-06-04 |
| 4456668 | Azo dyes containing phosphamic acid diester groups | Gerald Jan | 1984-06-26 |
| 4409143 | Monoazo dyes containing phosphamic acid diester groups | Gerald Jan | 1983-10-11 |
| 4379819 | Color-photographic recording material for the silver dye bleach process | Gerald Jan, Mario Fryberg | 1983-04-12 |
| 4323682 | Quinoxalines and their use in photographic processes | Gerald Jan, Remon Hagen | 1982-04-06 |
| 4254215 | Process for the prevention of darkening and the formation of a sediment in photographic developer solutions | Ekkehard Kramp, Max Marthaler | 1981-03-03 |
| 4216320 | Quinoxaline bleach catalysts | Gerald Jan, Remon Hagen | 1980-08-05 |
| 4202698 | Quinoxalines and their use in photographic processes | Gerald Jan, Remon Hagen | 1980-05-13 |