Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6305833 | Production of solids by precipitation | Otto Kumberger, Marco Millies, Norbert Neth, Wolfgang Jürgen Pöpel, Christopher William Rieker +2 more | 2001-10-23 |
| 6037443 | Thermoplastic elastomeric carbon monoxide/olefin copolymers | Hans-Joachim Muller, Roland Spahl, Bernhard Rieger, Adnan S. Abu-Surrah | 2000-03-14 |
| 5645806 | Decomposition of organohalogen compounds in dust-laden-waste gases | Klaus Hess, Roland Spahl, Ingo H. Dorn, Gunter Dinkhauser, Hans-Ingo Joschek | 1997-07-08 |
| 4687847 | Purification of riboflavin | Johannes Grimmer | 1987-08-18 |
| 4673742 | Preparation of riboflavin | Johannes Grimmer | 1987-06-16 |
| 4567262 | Purification of riboflavin | Johannes Grimmer | 1986-01-28 |
| 4328339 | Continuous preparation of isatoic anhydride | Gerhard Kilpper, Johannes Grimmer, Peter Tonne, Eckhard Hetzel | 1982-05-04 |