Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6582781 | Multilayer cholesteric pigments | Peter Schuhmacher, Norbert Schneider, Volker Richter, Harald Keller, Peter Blaschka +3 more | 2003-06-24 |
| 6410130 | Coatings with a cholesteric effect and method for the production thereof | Peter Schuhmacher, Norbert Schneider, Volker Richter, Harald Keller, Peter Blaschka +5 more | 2002-06-25 |
| 4709288 | Adjusting means in particular for guide elements, and magnetic tape cassette possessing such means | Norbert Schaeffer, Klaus-Dieter Goetz, Dietmar Pfefferkorn, Ottmar Burkle, Kurt Schmidts +5 more | 1987-11-24 |
| 4541587 | Hub for magnetic tape cassettes, especially compact cassettes, and magnetic tape cassette possessing one or more such hubs | Werner Stumpfi, Friedrich Engel, Horst Fitterer, Norbert Kreimes, Dietmar Pfefferkorn +2 more | 1985-09-17 |
| 4515331 | Hub for magnetic tape cassettes, especially compact cassettes, and magnetic tape cassette possessing one or more such hubs | Werner Stumpfi, Friedrich Engel, Horst Fitterer, Norbert Kreimes, Dietmar Pfefferkorn +2 more | 1985-05-07 |
| 4396169 | Magnetic tape cassette | Norbert Kreimes | 1983-08-02 |