Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5856550 | Enhancement of the storage stability of organic phosphites and phosphonites | Udo Quotschalla, Jean-Roch Pauquet, Ronald Salathe, Jurg Zingg | 1999-01-05 |
| 5840954 | Enhancing the storage stability of organic phosphites and phosphonites | Udo Quotschalla | 1998-11-24 |
| 5534645 | Trivalent phosphorus compounds stabilized with amines | Udo Quotschalla | 1996-07-09 |
| 5371263 | Process for stabilizing trivalent phosphorus compounds with amines | Udo Quotschalla | 1994-12-06 |
| 4778840 | Stabilized polypropylene | Paul Moser | 1988-10-18 |
| 4290941 | Stabilization systems from triarylphosphites and phenols | Horst Zinke, Hans J. Lorenz | 1981-09-22 |
| 4187212 | Stabilization systems from triarylphosphites and phenols | Horst Zinke, Hans J. Lorenz | 1980-02-05 |