Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4748146 | Process for encapsulating dissolved reactants of color reaction systems, the capsules obtained as a result thereof and their use in non-carbon papers | Gunther Pietsch | 1988-05-31 |
| 4684574 | Process for encapsulating dissolved reactants of color reaction system and resulting capsules | Gunther Pietsch | 1987-08-04 |
| 4427739 | Multiuse pressure-type reproduction material | Ulrich Kohle, Hans Paffhausen | 1984-01-24 |