Issued Patents All Time
Showing 26–37 of 37 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4405735 | Substituted diazaspirodecanes, their preparation and their use as stabilizers for organic polymers, and the polymers thus stabilized | Hartmut Wiezer, Helmut Korbanka | 1983-09-20 |
| 4376836 | Triazylaminotriazines, their preparation and their use for stabilizing synthetic polymers | Hartmut Wiezer | 1983-03-15 |
| 4340534 | Ethers based on polyalkyl-1-oxadiazaspirodecanes | Hartmut Wiezer | 1982-07-20 |
| 4335242 | Triazine derivatives | Hartmut Wiezer | 1982-06-15 |
| 4319030 | Alkylated diaza-spirodecanes | Hartmut Wiezer, Harald Haberlein, Gunther Nowy | 1982-03-09 |
| 4308362 | Copolymers of substituted piperidines, their manufacture and use | Hartmut Wiezer, Norbert Mayer | 1981-12-29 |
| 4308195 | Epoxide resins containing phenol groups, their manufacture and their use | Norbert Mayer, Franz Scheidl | 1981-12-29 |
| 4239891 | Substituted piperidine hydroxamides, their preparation, and their use as light stabilizers | Hartmut Wiezer, Norbert Mayer | 1980-12-16 |
| 4234471 | Novel polyalkyl-piperidine polymers, their preparation and use | Hartmut Wiezer, Helmut Korbanka | 1980-11-18 |
| 4229382 | Glycerol phosphites esterified with phenolcarboxylic acids | Norbert Mayer, Franz Scheidl, Hartmut Wiezer | 1980-10-21 |
| 4207270 | Phosphites of polyalcohols | Norbert Mayer, Hartmut Wiezer | 1980-06-10 |
| 4191684 | Urea derivatives, their preparation, and their use as light stabilizers | Hartmut Wiezer, Norbert Mayer, Harald Knorr | 1980-03-04 |