Patents per Year
Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6935993 | Roll | Joachim Grabscheid | 2005-08-30 |
| 6592715 | Device for the production of a multi-layer fiber stock web | Gunter Halmschlager, Christoph Haase | 2003-07-15 |
| 4922029 | Etherification of polyoxyalkylene derivatives | Stefan Birnbach, Josef Mueller, Jochen Houben | 1990-05-01 |
| 4383834 | Coloring of paper | Hans-Juergen Degen, Wolf Guender, Guenter Frey, Werner Streit, Rolf Fikentscher | 1983-05-17 |
| 4370454 | Preparation of maleic anhydride copolymers | Karlheinz Messmer, Hermann Fischer, Heinrich Hartmann, Walter Denzinger, Rolf Schneider +1 more | 1983-01-25 |
| 4330480 | Preparation of aminoalkyl half-esters of sulfuric acid | Otto Hertel, Karl-Heinz Beyer, Albrecht H. Wallis, Kamuran Izi | 1982-05-18 |
| 4324724 | Manufacture of polyalkylenepolyamines | Hans Mueller, Karl-Heinz Beyer, Werner Streit | 1982-04-13 |