Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5344465 | Colorant mixtures containing azo compounds based on phenyloxadiazolylaniline | Joachim Jesse | 1994-09-06 |
| 4956464 | Preparation of dihydroquinacridones, quinacridones and quinacridonequinones | Herbert Bender, Friedhelm Teich, Reinhard Kemper | 1990-09-11 |
| 4764599 | Disazo compounds containing an N,N-bis(2-amino-benzoyl)piperazine derivative as the diazo component | Erwin Hahn | 1988-08-16 |
| 4694075 | Bisazo compounds containing anthranilic acid and thiazole moieties | Erwin Hahn | 1987-09-15 |
| 4656256 | Benzoazoresorcinol dyes containing a quaternized aminoalkylene oxycarbonyl group | Hans-Juergen Degen, Johannes P. Dix | 1987-04-07 |
| 4652632 | Naphtholazo benzoylalkylene amines and salts thereof as dyes for acid-modified fibers, leather and paper | — | 1987-03-24 |
| 4648993 | Cationic phthalocyanine dyes | Udo Mayer | 1987-03-10 |