Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6524696 | Support for ink-jet recording material | Rainer Gumbiowski | 2003-02-25 |
| 6068733 | Recording material for the ink jet printing process | Gerhard Dransmann | 2000-05-30 |
| 5237181 | Method of inspecting a web of translucent material, especially photographic paper | Alois-Bernhard Kerkhoff | 1993-08-17 |
| 4820582 | Waterproof photographic paper support | Heinz-Otto Merz, Alois-Bernhard Kerkhoff | 1989-04-11 |
| 4808267 | Waterproof photographic paper support | Alois-Bernhard Kerkhoff, Rudolf Wanka | 1989-02-28 |