Issued Patents All Time
Showing 26–38 of 38 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5304221 | Reactive dyestuff mixtures | Max Schwarz, Joachim Grutze, Dietrich Hildebrand, Frank-Michael Stohr | 1994-04-19 |
| 5279622 | Solid dyestuff preparations having improved water solubility | Josef-Walter Stawitz, Frank-Michael Stohr | 1994-01-18 |
| 5057609 | Triphendioxazine dyestuffs | Horst Jager | 1991-10-15 |
| 4933436 | Process for the preparation of stable aqueous solutions of anionic dyestuffs by conducting diazotization in the presence of an aromatic sulphonic acid | Karl-Heinz Wolf, Reinhold Klipper | 1990-06-12 |
| 4778603 | Process for the preparation of a concentrated aqueous reactive dyestuff solution | Jochen Koll, Detlef Szeymies | 1988-10-18 |
| 4754020 | Process for preparing aromatic diazonium salts by diazotation of amines | Karlheinz Wolf, Reinhold Klipper, Peter M. Lange | 1988-06-28 |
| 4711642 | Liquid, water containing mono-fluoro-triazinyl reactive dyestuff preparation with pH 8-12 | Karlheinz Wolf | 1987-12-08 |
| 4702744 | Process for the preparation of concentrated solutions of anionic dyestuffs and dyestuff additives by cation exchange with cation exchange resin | Jochen Koll, Karlheinz Wolf, Reinhold Klipper, Peter M. Lange | 1987-10-27 |
| 4685933 | Concentrated reactive dyestuff solutions containing cyanamide compound as stabilizer | Karlheinz Wolf, Werner Marschner | 1987-08-11 |
| 4602915 | Storage-stable solution of a copper phthalocyanine reactive dyestuff | Karlheinz Wolf | 1986-07-29 |
| 4443225 | Liquid-crystalline phase of an azo reactive dyestuff, and its use for the dyeing and printing of natural and synthetic substrates | Karlheinz Wolf, Jochen Koll, Reinhold Hornle, Hans-Heinz Molls, Volker Paulat | 1984-04-17 |
| 4435181 | Concentrated flowable storage stable aqueous formulations of cold dyeing fiber reactive dyestuffs | Robert G. Hoguet, Dietmar Kalz, Thomas J. Thomas, Henry T. Whetsell, Konrad Nonn +1 more | 1984-03-06 |
| 4285991 | Method for producing printed circuits | Klaus Gedrat, Hans-Jurgen Ehrich, Hartmut Mahlkow | 1981-08-25 |