Issued Patents All Time
Showing 1–25 of 45 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6296677 | Liquid polyfunctional additives for improved fuel lubricity | Marc Ribeaud, Paul Dubs, Samuel Evans | 2001-10-02 |
| 6046263 | Liquid antioxidants as stabilizers | Samuel Evans, Paul Dubs, Stephan Allenbach | 2000-04-04 |
| 5665273 | Hals phosphonites as stabilizers | Rita Pitteloud | 1997-09-09 |
| 5523007 | Stabilized diesel engine oil | Ulrich Kristen, Klaus Muller | 1996-06-04 |
| 4798822 | Selected 3,9-di(2,2,6,6-tetramethyl-4-piperidyl)-2,4,8,10-tetraoxa-3,9-diphosphas piro [5,5]undecanes | Peter Hofmann, Hans-Rudolf Meier, Paul Dubs | 1989-01-17 |
| 4692258 | Tetrahydroquinolines as antioxidants for lubricants | Paul Dubs, Samuel Evans | 1987-09-08 |
| 4661594 | Certain [(2,2,6,6-tetramethyl-4-piperidyl)amino]-1,3,2-dioxaphosphorinanes useful as stabilizers for protecting resins | Peter Hofmann, Hans-Rudolf Meier, Paul Dubs | 1987-04-28 |
| 4652648 | Phosphonous acid monoester-monoamides | — | 1987-03-24 |
| 4579682 | Phosphonous acid monoester-monoamides | — | 1986-04-01 |
| 4434109 | Phosphonous acid monoester-monoamides | — | 1984-02-28 |
| 4414345 | Compositions stabilized with dioxaphosphepines | — | 1983-11-08 |
| 4409346 | Compositions stabilized by 6-amino-dibenz[d,g][1,3,2]dioxaphosphocines | — | 1983-10-11 |
| 4386204 | 6-Piperidino-dibenz[d,g][1,3,6,2]dioxathiophosphocine | — | 1983-05-31 |
| 4383950 | Phosphite stabilizers | — | 1983-05-17 |
| 4380515 | N-Substituted 6-amino-dibenz[c,e][1,2]oxaphosphorines | Samuel Evans | 1983-04-19 |
| 4380676 | Process for the production of 2,2'-dihydroxy-biphenyls | — | 1983-04-19 |
| 4374742 | Novel lubricant additives | Samuel Evans, Eberhard Gegner | 1983-02-22 |
| 4322527 | 6-Amino-dibenz[d,g][1,3,2]dioxaphosphocines | — | 1982-03-30 |
| 4321218 | Phosphite stabilizer | Helmut Muller | 1982-03-23 |
| 4317911 | Piperidine containing cyanuric acid derivatives | Friedrich Karrer | 1982-03-02 |
| 4301061 | Dibenzodioxaphosphepines and stabilized polymers | — | 1981-11-17 |
| 4299926 | Polymeric light stabilizers for plastics | Jean Rody | 1981-11-10 |
| 4297492 | Phenolic-1,3,5-triazines | Siegfried Rosenberger, Samuel Evans | 1981-10-27 |
| 4276232 | Phosphorus stabilizers | — | 1981-06-30 |
| 4268593 | Recording material for color photography | David G. Leppard | 1981-05-19 |