Issued Patents All Time
Showing 51–75 of 75 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5206414 | Process for the preparation of hydroxyphenylpropionic acid esters | Paul Dubs, Milos Rusek, Zdenek Mazour, Arpad Major | 1993-04-27 |
| 5091099 | Lubricating oil composition | Rolf Schumacher | 1992-02-25 |
| 5073278 | Lubricant composition | Rolf Schumacher, Paul Dubs | 1991-12-17 |
| 5019285 | Thioalkanoic acid substituted N,N-dialkylhydroxylamines and stabilized lubricant compositions | David Eliezer Chasan, Raymond Seltzer | 1991-05-28 |
| 5008459 | Substituted phenols as stabilizers | Hans-Rudolf Meier, Paul Dubs | 1991-04-16 |
| 4965006 | N-substituted tetrahydroquinolines for use as antioxidants in lubricants | Hans-Rudolf Meier | 1990-10-23 |
| 4963276 | Lubricant composition | — | 1990-10-16 |
| 4929732 | N-substituted tetrahydroquinolines for use as antioxidants in lubricants | Hans-Rudolf Meier | 1990-05-29 |
| 4919832 | N-substituted tetrahydroquinolines for use as antioxidants in lubricants | Hans-Rudolf Meier | 1990-04-24 |
| 4877824 | Sulfur-containing compounds as antioxidants for lubricants and elastomers | — | 1989-10-31 |
| 4874885 | Process for the preparation of mercaptomethylphenols | Werner Stegmann, Hans-Rudolf Meier, Roger Martin, Reto Luisoli | 1989-10-17 |
| 4828741 | N-substituted tetrahydroquinolines for use as antioxidants in lubricants | Hans-Rudolf Meier | 1989-05-09 |
| 4741846 | 2,4,6-trifunctionalized phenols | — | 1988-05-03 |
| 4699939 | Ortho cyclohexyl, para hydroxy aralkanoic acid esters and amide antioxidants | Ivan Orban, Hans-Rudolf Meier, Paul Dubs, Peter Hofmann | 1987-10-13 |
| 4692258 | Tetrahydroquinolines as antioxidants for lubricants | Michael Rasberger, Paul Dubs | 1987-09-08 |
| 4691044 | Antioxidants for organic materials | — | 1987-09-01 |
| 4670495 | O-linked polyphenolic antioxidants | — | 1987-06-02 |
| 4439615 | Mercaptophenol stabilizers | Siegfried Rosenberger, Bernard Gilg | 1984-03-27 |
| 4380515 | N-Substituted 6-amino-dibenz[c,e][1,2]oxaphosphorines | Michael Rasberger | 1983-04-19 |
| 4374742 | Novel lubricant additives | Michael Rasberger, Eberhard Gegner | 1983-02-22 |
| 4297492 | Phenolic-1,3,5-triazines | Michael Rasberger, Siegfried Rosenberger | 1981-10-27 |
| 4263202 | Novel metal complexes | Michael Rasberger, Paul Moser | 1981-04-21 |
| 4246170 | Phenol phosphorus compounds as polyolefin stabilizers | — | 1981-01-20 |
| 4197236 | Piperidine stabilizers | Siegfried Rosenberger | 1980-04-08 |
| 4196119 | Novel phenol stabilizers | — | 1980-04-01 |