Issued Patents All Time
Showing 26–39 of 39 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5061596 | Silicon naphthalocyanines and thin radiation sensitive coating films containing same | Peter Neumann, Sibylle Brosius | 1991-10-29 |
| 5047312 | Silicon naphthalocyanines with unsaturated ligands and optical recording medium | Peter Neumann, Sibylle Brosius | 1991-09-10 |
| 5032495 | Tetraazaporphyrins and optical recording medium | Peter Neumann, Rolf-Dieter Kohler | 1991-07-16 |
| 4999026 | Transferring dyes for thermal printing: tri-cyano-vinyl aniline dyes | Karl-Heinz Etzbach, Ruediger Sens | 1991-03-12 |
| 4966798 | Optical recording medium | Sibylle Brosius, Helmut Barzynski, Karl-Heinz Feuerherd, Wolfgang Schrott, Michael Acker +3 more | 1990-10-30 |
| 4946762 | Monosubstituted and disubstituted phthalocyanines | Harald Kuppelmaier, Gerhard Wagenblast | 1990-08-07 |
| 4937338 | Pigments | Helmut Flohr, Joachim Jesse, Peter Neumann | 1990-06-26 |
| 4917989 | Optical recording medium which has a reflector layer containing a silicon-phthalocyanine derivative | Peter Hauser, Michael Acker, Wolfgang Schrott, Gerhard Wagenblast | 1990-04-17 |
| 4904566 | Optical recording medium containing an azulenium dye | Wolfgang Schrott, Peter Neumann, Heidi Benthack-Thoms | 1990-02-27 |
| 4851549 | Pigments | Helmut Flohr, Joachim Jesse, Peter Neumann | 1989-07-25 |
| 4806664 | Novel tetraphenyldithiolene complexes, asymmetrically substituted benzoins, and optical recording materials containing the novel complexes | Wolfgang Schrott, Peter Neumann, Michael Thomas, Helmut Barzynski, Klaus D. Schomann +1 more | 1989-02-21 |
| 4785088 | Pigments and their preparation | Helmut Flohr, Joachim Jesse, Peter Neumann | 1988-11-15 |
| 4739053 | 2H-v-triazolo[4-5-d]pyrimidines | Gerhard Hoffmann, Peter Neumann | 1988-04-19 |
| 4675423 | Camphordithiolene complexes | Wolfgang Schrott, Peter Neumann | 1987-06-23 |