Issued Patents All Time
Showing 51–57 of 57 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4565771 | Production of gravure printing plates having plastic printing layers | John Lynch, Dietrich Saenger | 1986-01-21 |
| 4517270 | Electrophotographic recording medium | Fritz Graser, Gerhard Hoffmann, Peter Neumann, Manfred Patsch | 1985-05-14 |
| 4481272 | Layered electrophotographic recording medium comprising heterocyclic nitrogen containing organic dye compounds | Albrecht Eckell, Heinz Eilingsfeld, Albert Elzer, Franz Feichtmayr, Gerhard Hoffmann +1 more | 1984-11-06 |
| 4465760 | Production of relief images or resist images by a negative-working method | Dietrich Saenger, Uwe Klinsmann | 1984-08-14 |
| 4456679 | Production of relief images or resist images by a positive-working method | Dietrich Saenger | 1984-06-26 |
| 4429029 | Organic electrophotographic recording medium | Gerhard Hoffmann, Fritz Graser | 1984-01-31 |
| 4419427 | Electrophotographic medium with perylene-3,4,9,10-tetracarboxylic acid N,N'-bis-(2',6'-dichlorophenyl)-diimide | Fritz Graser, Gerhard Hoffmann, Peter Neumann | 1983-12-06 |