Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4721651 | Microcapsules having capsule walls formed of aliphatic diisocyanate and diamine | — | 1988-01-26 |
| 4622267 | Microcapsules having capsule walls formed of aliphatic diisocyanate and diamine | — | 1986-11-11 |
| 4299723 | Microcapsules and their preparation | Manfred Dahm, Gert Jabs, Bernd Koglin, Hildegard Schnoring | 1981-11-10 |
| 4221690 | Coating composition for acceptor sheets in carbonless copying | Ferdinand Land | 1980-09-09 |
| 4191403 | Donor material for carbonless copying | Guido Dessauer, Ferdinand Land | 1980-03-04 |