Issued Patents All Time
Showing 26–32 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4239891 | Substituted piperidine hydroxamides, their preparation, and their use as light stabilizers | Gerhard Pfahler, Norbert Mayer | 1980-12-16 |
| 4234471 | Novel polyalkyl-piperidine polymers, their preparation and use | Helmut Korbanka, Gerhard Pfahler | 1980-11-18 |
| 4229382 | Glycerol phosphites esterified with phenolcarboxylic acids | Norbert Mayer, Gerhard Pfahler, Franz Scheidl | 1980-10-21 |
| 4223148 | Polyalkyl-piperidine diols and process for their preparation | — | 1980-09-16 |
| 4220773 | Process for the manufacture of aza-spirodecanes | Helmut Korbanka, Norbert Mayer | 1980-09-02 |
| 4207270 | Phosphites of polyalcohols | Norbert Mayer, Gerhard Pfahler | 1980-06-10 |
| 4191684 | Urea derivatives, their preparation, and their use as light stabilizers | Gerhard Pfahler, Norbert Mayer, Harald Knorr | 1980-03-04 |