Issued Patents All Time
Showing 25 most recent of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8563129 | Polysilazane-containing coatings for increasing the conversion efficiency of encapsulated solar cells | Klaus Rode, Sandra Stojanovic, Hubert Liebe, Lars Blankenburg | 2013-10-22 |
| 8482106 | Method for producing ceramic passivation layers on silicon for solar cell manufacture | Klaus Rode | 2013-07-09 |
| 5648535 | Process for preparing acyl aminophenols | James A. Foster, Werner H. Mueller, Debra A. Ryan | 1997-07-15 |
| 5182187 | Radiation-polymerizable composition and recording material prepared from this composition | Ulrich Geissler | 1993-01-26 |
| 5085669 | Process for stabilizing a leuco-dye solution by means of a piperidine derivative | Hans-Dieter Frommeld | 1992-02-04 |
| 4940647 | Photopolymerizable compositions a leuco dye and a leuco dye stabilizer | Hans-Dieter Frommeld | 1990-07-10 |
| 4689416 | Process for the preparation of 1-oxa-3,8-diaza-4-oxo-spiro(4.5)decane compounds | Josef Ertl | 1987-08-25 |
| 4562220 | Polyalkyldiazaspirodecanylacetic acid derivatives, a process for their preparation and their use as light stabilizers for organic polymers | — | 1985-12-31 |
| 4526966 | Polyalkyldiazaspirodecane derivatives | — | 1985-07-02 |
| 4504661 | Polytriazinylamines, process for their preparation | Gerhard Pfahler | 1985-03-12 |
| 4496726 | Polytriazinyl alcohols, esters and urethanes, a process for their preparation | Gerhard Pfahler | 1985-01-29 |
| 4476302 | High-molecular esters and urethanes containing piperidine groups, a process for their preparation | Gerhard Pfahler | 1984-10-09 |
| 4471417 | Poly-bis-triazinylimides, their preparation | Gerhard Pfahler | 1984-09-11 |
| 4451400 | Phosphazenes useful as stabilizers in polymers | — | 1984-05-29 |
| 4433145 | Triazine stabilizers | Gerhard Pfahler | 1984-02-21 |
| 4409348 | Poly-bis-triazinylaminotriazinylamines, their preparation and their use as light stabilizers for plastics, and plastics which have been stabilized with them | Gerhard Pfahler | 1983-10-11 |
| 4405735 | Substituted diazaspirodecanes, their preparation and their use as stabilizers for organic polymers, and the polymers thus stabilized | Gerhard Pfahler, Helmut Korbanka | 1983-09-20 |
| 4376836 | Triazylaminotriazines, their preparation and their use for stabilizing synthetic polymers | Gerhard Pfahler | 1983-03-15 |
| 4356308 | Process for the preparation of 2,2,6,6-tetramethylpiperidone-4 | Gunther Nowy, Harald Haberlein | 1982-10-26 |
| 4340534 | Ethers based on polyalkyl-1-oxadiazaspirodecanes | Gerhard Pfahler | 1982-07-20 |
| 4335242 | Triazine derivatives | Gerhard Pfahler | 1982-06-15 |
| 4319030 | Alkylated diaza-spirodecanes | Gerhard Pfahler, Harald Haberlein, Gunther Nowy | 1982-03-09 |
| 4308362 | Copolymers of substituted piperidines, their manufacture and use | Gerhard Pfahler, Norbert Mayer | 1981-12-29 |
| 4267322 | Process for the manufacture of 7-nitro-1,3,5-triaza-adamantane | — | 1981-05-12 |
| 4247449 | Urea derivatives, process for their manufacture and their use as light protecting agents for polymers | Norbert Mayer, Harald Knorr | 1981-01-27 |