Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6121452 | Process for the preparation of quinophthalones | Stephan Michaelis, Karl-Heinz Reinhardt | 2000-09-19 |
| 5955614 | Bridged perinones/quinophthalones | Dieter Arlt, Karl-Heinz Reinhardt | 1999-09-21 |
| 5912386 | Bridged anthraquinones | Karl-Heinz Reinhardt, Helmut Blaser | 1999-06-15 |
| 5830931 | Process for the preparation of polycyclic compounds | Thomas Pelster | 1998-11-03 |
| 5639896 | Process for the preparation of N,N'-disubstituted 1,4-diaminoanthraquinones | Reinold Schmitz, Karl-Heinz Reinhardt, Josef Schroder, Stephan Michaelis | 1997-06-17 |
| 5147412 | Production of dispersions of spherical particles by crystallization of emulsions | Bernd Klinksiek, Carsten Gerdes, Ferdinand Kummeler, Gunter Heinrich, Karl Reizlein +1 more | 1992-09-15 |
| 4760132 | Process for preparing cationic hydrazone dyestuffs | Hans-Lothar Dorsch, Volker Huhne, Roderich Raue | 1988-07-26 |
| 4549980 | White modification of a bis-triazinyl amino stilbene optical brightener and a process for making the same | Susan M. Morris, Thomas J. Thomas | 1985-10-29 |
| 4468230 | Acid dye dispersions | Thomas J. Thomas, Robert G. Hoguet, Charles W. Sandefur | 1984-08-28 |
| 4435181 | Concentrated flowable storage stable aqueous formulations of cold dyeing fiber reactive dyestuffs | Robert G. Hoguet, Thomas J. Thomas, Henry T. Whetsell, Joachim Wolff, Konrad Nonn +1 more | 1984-03-06 |