Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4812384 | Light-sensitive polycondensation product containing diazonium groups, process for the preparation thereof, and light-sensitive recording material containing this polycondensation product | Werner Franke | 1989-03-14 |
| 4681827 | Organic electrophotographic material sensitized by cyanine dye | Werner Franke | 1987-07-21 |
| 4663261 | Electrophotographic recording material containing zinc oxide and cyanine sensitizer | Werner Franke | 1987-05-05 |
| 4657836 | Electrophotographic material sensitized by 3,3'-dimethylindolenine cyanine dyes | Werner Franke | 1987-04-14 |
| 4603098 | Electrophotographic recording material | Werner Franke | 1986-07-29 |
| 4387148 | Electrophotographic recording material and process for its production | Werner Franke, Markus Seibel, Hans Trittler | 1983-06-07 |