Issued Patents All Time
Showing 26–36 of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5591888 | Process for producing tert.-butyl chloroacetate | Andreas Seidel, Dieter Peters, Dimitrios Mouratidis | 1997-01-07 |
| 5268479 | Process for the preparation of tertiary phosphines | Othmar Stelzer, Klaus-Peter Langhans | 1993-12-07 |
| 5166452 | Process for inhibiting and destroying peroxides in dialkyl ethers | Reinhard Gradl, Heinz Erpenbach, Erhard Jagers | 1992-11-24 |
| 5002914 | Process for purifying and recovering the contaminated catalyst solution arising in the carbonylation of methanol and/or methyl acetate and/or dimethyl ether | Heinz Erpenbach, Winfried Lork, Peter Prinz | 1991-03-26 |
| 5003108 | Process for the preparation of phosphanes | Othmar Stelzer, Klaus-Peter Langhans, Jurgen Svara | 1991-03-26 |
| 4885394 | Process for the preparation of tertiary phosphine oxides | Jurgen Svara | 1989-12-05 |
| 4885393 | Novel s-butyl-di-n-alkyl phosphines, phosphine oxides and phosphine sulfides, and processes for making them | — | 1989-12-05 |
| 4781867 | Process for making phosphinic or phosphonic acid chlorides | — | 1988-11-01 |
| 4757156 | Process for making tertiary alkylphosphines | Georg Elsner, Hans-Werner Stephan, Friedrich-Karl Frorath | 1988-07-12 |
| 4752648 | Process for making chlorophosphines and thiophosphinic acid chlorides, and 9-chloro-9-thioxo-9-phosphabicyclononanes | Werner Klose | 1988-06-21 |
| 4536350 | Process for making chlorophosphanes, phosphinic acid chlorides or thiophosphinic acid chloride, and novel isomeric mixture consisting of chloro-phosphabicyclononanes | — | 1985-08-20 |