Issued Patents All Time
Showing 76–91 of 91 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4563533 | Process for the preparation of halogen-substituted 2-aminobenzothiazoles | Heinz Rentel | 1986-01-07 |
| 4552970 | Solvated salts of dinitrophenylcyanamides, and a process for the preparation thereof | Otto Arndt, Wolfgang Tronich | 1985-11-12 |
| 4540832 | Process for the preparation of 6-chloro-2,4-dinitrophenol | Otto Arndt | 1985-09-10 |
| 4540815 | Process for the preparation of pure 3-acetylamino-anilines | Manfred Hintzmann | 1985-09-10 |
| 4521617 | Process for preparing pure alkyl 1-hydroxy-2-naphthoates | Heinrich Volk | 1985-06-04 |
| 4487725 | Process for the preparation of N-acetylaminoarylsulfonic acids in sulfuric acid as solvent | Otto Arndt | 1984-12-11 |
| 4443630 | Process for preparing 2-amino-5-nitrotoluene | Rudiger Berthold | 1984-04-17 |
| 4429134 | Process for the manufacture of 2(3H)-benzothiazolones substituted in 3-position | — | 1984-01-31 |
| 4370483 | Process for the manufacture of 2-hydroxybenzothiazoles | — | 1983-01-25 |
| 4369323 | Process for the manufacture of 2,2'-imino-bis-benzothiazole compounds | — | 1983-01-18 |
| 4294749 | Process for the coloration of thermoplastic polymers and polycondensates in the mass with water-insoluble disazo-methine compounds | Wolfgang Teige | 1981-10-13 |
| 4281187 | Process for the preparation of 2,4-dinitrophenyl urea | Kurt Gengnagel | 1981-07-28 |
| 4265632 | Process for the coloration of thermoplastic polymers and polycondensates in the mass with water-insoluble disazomethine compounds | Wolfgang Teige | 1981-05-05 |
| 4252963 | Process for the manufacture of 2-amino-aryleno-thiazole compounds and of derivatives thereof N-substituted in the ring | — | 1981-02-24 |
| 4246196 | Diaminophenyl ureas | Otto Arndt, Peter Bohme, Wolfgang Tronich, Bernhard Mees | 1981-01-20 |
| 4234513 | Process for the preparation of monoaryl thioureas | — | 1980-11-18 |