Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4988829 | Process for the preparation of 2-(4-chlorophenylethyl)-2-tert.-butyl-oxirane | Paul Fiedler, Martin Littmann, Achim Noak, Gerd Siekmann | 1991-01-29 |
| 4683308 | Process for the preparation of 2-arylamino-4,6-dichloro-s-triazines | Andreas Gunther, James R. Malone, Hans-Walter Hohl | 1987-07-28 |
| 4647676 | Process for the isolation of 2,2-dimethyl-7-hydroxy-coumaran | Udo Allenbach, Gerhard Buttner, Karl-Friedrich Christmann | 1987-03-03 |
| 4486611 | Isolation of dihydroxybenzene-monoethers from reaction mixtures | Udo Allenbach, Gerhard Buttner, Karl-Friedrich Christmann | 1984-12-04 |
| 4383126 | Preparation of monoalkyl ethers of hydroxyphenols | Gerhard Buttner, Artur Judat, Udo Allenbach | 1983-05-10 |
| 4360479 | Process for the preparation of acyl cyanide compounds | Kurt Findeisen, Hans Kratzer | 1982-11-23 |
| 4321204 | Preparation of certain 2-methyl-2,3-dihydro-benzofuran-7-ols | Gerhard Buttner, Karl-Friedrich Christmann, Udo Allenbach | 1982-03-23 |
| 4216332 | Preparation of chlorinated N-methyl-imidazoles and N-methyl-imidazolines | Gerhard Dankert | 1980-08-05 |
| 4191711 | Process for the preparation of certain nuclear chlorinated benzotrichlorides | Hans-Helmut Schwarz | 1980-03-04 |