Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D675373 | Apparatus for the partial dyeing of hair | — | 2013-01-29 |
| 7905271 | Apparatus for carrying cooling water away from the narrow sides of a slab | Axel Stavenow | 2011-03-15 |
| 6779587 | Method and device for adjusting one or more roll segments in a continuous casting installation for casting metals, especially for steel materials | Axel Weyer, Horst von Wyl, Dieter Böttger, Axel Selke, Peter Schmidt | 2004-08-24 |
| 5472997 | Process for reprocessing plastic wastes | Thomas Koslowski, Olaf Musebrink | 1995-12-05 |
| 5223549 | Process for the production of rigid polyurethane foams | Rolf Wiedermann, Gerhard Heilig | 1993-06-29 |
| 5084485 | Process for the production of rigid foams containing urethane and predominantly isocyanurate groups and their use as insulating materials | Gerhard Heilig, Rolf Wiedermann | 1992-01-28 |
| 4691720 | Appliance for partially dyeing the hair | — | 1987-09-08 |
| 4546781 | Permanent wave curler | — | 1985-10-15 |
| 4462413 | Appliance for the partial dyeing of hair | — | 1984-07-31 |
| 4246365 | Process for the production of plastics containing isocyanurate groups and urethane groups | Rolf Wiedermann, Rudolf Merten, Werner Dietrich | 1981-01-20 |