Issued Patents All Time
Showing 76–79 of 79 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4355159 | Nickel complex pigments of azines | Paul Lienhard, Andre Pugin | 1982-10-19 |
| 4349671 | Process for the production of metal complexes of isoindoline azines | Paul Lienhard | 1982-09-14 |
| 4263197 | Process for dyeing linear polyamides in the melt | Paul Lienhard, Heinz Peter | 1981-04-21 |
| 4202814 | Process for the mass coloration of polyesters | Paul Lienhard | 1980-05-13 |