Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6147239 | Process for preparing n, n'-disubstituted p-quinonediimines, their use and organosilanes containing methacryloxy or acryloxy groups, processes for their stabilization and their preparation | Guenther Bernhardt, Margret Haas, Heinz Kragl | 2000-11-14 |
| 6143920 | Process for the preparation of methoxyacetic acid esters | Wolfgang Kleemiss, Marcel Feld | 2000-11-07 |
| 5886219 | Process for preparing malonic acid and alkylmalonic acids | — | 1999-03-23 |
| 5869737 | Process for the preparation of cyclopropane-1, 1-dicarboxylic acid derivatives | — | 1999-02-09 |
| 5856542 | Process for preparing N,N'-disubstituted P-quinonediimines, their use and organosilanes containing methacryloxy or acryloxy groups, processes for their stabilization and their preparation | Guenther Bernhardt, Margret Haas, Heinz Kragl | 1999-01-05 |
| 5849949 | Process for preparing alkyl- and arylmalonic acids | — | 1998-12-15 |
| 5569780 | Dialkyl 2-haloethyl malonates | — | 1996-10-29 |
| 5510509 | Preparation of esters of cyclopropane-1,1-dicarboxylic acid | — | 1996-04-23 |
| 5508396 | Process for preparing n-alkyllactams | — | 1996-04-16 |
| 5463111 | Process for preparing dialkyl 2-haloethyl malonates | — | 1995-10-31 |
| 5399778 | Process for the preparation of ketals | Josef Metz | 1995-03-21 |
| 5334747 | Method of preparing substituted malonic ester anilides and malonic acid mono-anilides | — | 1994-08-02 |
| 5117027 | Process for the preparation of organosilanes containing methacryloyloxy or acryloyloxy groups | Gunther Bernhardt, Margret Haas, Heinz Kragl | 1992-05-26 |
| 5101043 | Process for the preparation of 3-carboxamido-5-vinyl-2-pyrrolidone | — | 1992-03-31 |
| 5041619 | Process for the preparation of alkoxyalkylidenemalonic acid esters | Franz-Albert von Itter | 1991-08-20 |
| 4673751 | Method of preparing 3,4-dihydro-alpha-pyrones | Gunther Meyer | 1987-06-16 |
| 4465865 | Method of preparing terephthalic aldehyde and isophthalic aldehyde | Fritz Englander | 1984-08-14 |
| 4446327 | Process for the preparation of 3-chlorophthalide | Greger Weisgerber | 1984-05-01 |
| 4380632 | Method of preparing quinolines, naphthyridines and other nitrogen bi-heterocyclic compounds | — | 1983-04-19 |
| 4371709 | Method of preparing oligomeric brominous xylylene bisphenol ethers | Manfred Thallmeier | 1983-02-01 |
| 4322554 | Polymeric azomethines | Hans-Joachim Herrmann, Gunther Meyer | 1982-03-30 |
| 4297502 | Aromatic bisazomethines, a method for their preparation, and their use as reactive pigments | Hans-Joachim Herrmann, Gunther Meyer | 1981-10-27 |
| 4268698 | Method of preparing bis-(chloromethyl)-tetrachlorobenzenes | — | 1981-05-19 |
| 4216153 | Method of preparing phthalide | Fritz Englaender | 1980-08-05 |
| 4211710 | Process of preparing 3-bromophthalide | — | 1980-07-08 |