Issued Patents All Time
Showing 26–50 of 68 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880859 | Light-stabilized star polymer microparticles | Mario Slongo, Franciszek Sitek, Andreas Valet | 1989-11-14 |
| 4853471 | 2-(2-Hydroxyphenyl)-benztriazoles, their use as UV-absorbers and their preparation | Mario Slongo | 1989-08-01 |
| 4785063 | Copolymerizable 2-(2'-hydroxy-5'-acryloyloxyalkyl)-2H-benzotriazoles | Mario Slongo | 1988-11-15 |
| 4629682 | Recording material for color photography | David G. Leppard | 1986-12-16 |
| 4609698 | Oligoesters containing polyalkylpiperidine groups | Friedrich Karrer | 1986-09-02 |
| 4584265 | Color-photographic recording material | David G. Leppard | 1986-04-22 |
| 4558131 | Color-photographic recording material | David G. Leppard | 1985-12-10 |
| 4518688 | Color-photographic recording material | David G. Leppard | 1985-05-21 |
| 4518679 | Color-photographic recording material | David G. Leppard | 1985-05-21 |
| 4517283 | Color-photographic recording material | David G. Leppard | 1985-05-14 |
| 4496649 | Color-photographic recording material | David G. Leppard | 1985-01-29 |
| 4481315 | Polyalkylpiperidine light stabilizers | Mario Slongo | 1984-11-06 |
| 4465757 | Recording material for color photography | David G. Leppard | 1984-08-14 |
| 4465765 | Colorphotographic recording material | David G. Leppard | 1984-08-14 |
| 4429077 | Process for curing stoving lacquers | Friedrich Karrer, Godwin Berner | 1984-01-31 |
| 4419472 | Piperidine compositions for light stabilization | Godwin Berner, Manfred Rembold | 1983-12-06 |
| 4369275 | Malonate derivatives as stabilizers for organic materials | — | 1983-01-18 |
| 4340533 | Novel stabilizers | — | 1982-07-20 |
| 4322337 | Polyalkylpiperidine derivatives of s-triazines as stabilizers | — | 1982-03-30 |
| 4299926 | Polymeric light stabilizers for plastics | Michael Rasberger | 1981-11-10 |
| 4294963 | Polyalkylpiperidine derivatives of s-triazine | — | 1981-10-13 |
| 4293468 | Malonate derivatives as stabilizers for organic materials | — | 1981-10-06 |
| 4289686 | Tetra-alkyl piperidine derivatives as light stabilizers | Mario Slongo | 1981-09-15 |
| 4288593 | Polyalkylpiperidine derivatives of s-triazines | — | 1981-09-08 |
| 4260689 | Polymeric light stabilizers for plastics | Michael Rasberger | 1981-04-07 |