Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5084592 | Azulenesquaric acid dyes, azulene intermediates therefor, and optical recording medium | Wolfgang Schrott, Peter Neumann, Sibylle Brosius, Klaus D. Schomann, Harald Kuppelmaier | 1992-01-28 |
| 4966798 | Optical recording medium | Sibylle Brosius, Karl-Heinz Feuerherd, Wolfgang Schrott, Bernhard Albert, Michael Acker +3 more | 1990-10-30 |
| 4954422 | Recording material containing a layer of polymer particles and a superimposed metallic layer | Josef Lamprecht, Gregor Ley, Arend Werner | 1990-09-04 |
| 4939012 | Naphtholactam dyes and optical recording medium containing these dyes | Matthias Dust, Peter Neumann, Ernst Schefczik, Heidi Benthack-Thoms, Klaus D. Schomann +2 more | 1990-07-03 |
| 4937171 | Photosensitive recording material | Josef Lamprecht, Gregor Ley, Arend Werner | 1990-06-26 |
| 4889756 | Sheet-like, multilayer, laser-optical recording material | Heidi Benthack-Thomas, Karl Hellwig, Christof Taubitz | 1989-12-26 |
| 4876356 | Naphtholactam dyes and optical recording medium containing these days | Matthias Dust, Peter Neumann, Ernst Schefczik, Heidi Benthack-Thoms, Klaus D. Schomann +2 more | 1989-10-24 |
| 4830465 | Irreversible optical recording media and fabrication thereof | Arend Werner, Hartmut Hibst | 1989-05-16 |
| 4830951 | Naphtholactamsquaric acid dyes and optical recording materials containing these dyes | Matthias Dust, Peter Neumann, Peter Hauser, Gerhard Wagenblast, Heidi Benthack-Thoms +2 more | 1989-05-16 |
| 4806664 | Novel tetraphenyldithiolene complexes, asymmetrically substituted benzoins, and optical recording materials containing the novel complexes | Wolfgang Schrott, Peter Neumann, Bernhard Albert, Michael Thomas, Klaus D. Schomann +1 more | 1989-02-21 |
| 4788562 | Optical recording medium | Herbert Naarmann | 1988-11-29 |
| 4665129 | Electrically conductive thermoplastic mixtures of macromolecular compounds and finely divided pyrrole polymers | Herbert Naarmann, Burghard Schmitt | 1987-05-12 |
| 4632897 | Photopolymerizable recording material suitable for the production of photoresist layers | Albrecht Eckell, Albert Elzer, Uwe Klinsmann, Reinhold J. Leyrer, Axel Sanner | 1986-12-30 |
| 4576902 | Process of making and using a positive working photosensitive film resist material | Dietrich Saenger | 1986-03-18 |
| 4555471 | Image-recording materials and image-recording carried out using these | Klaus Holoch | 1985-11-26 |
| 4523208 | Heat-sensitive recording material | — | 1985-06-11 |
| 4515877 | Image-recording materials and image-recording carried out using these to produce an optical mask | Klaus Holoch | 1985-05-07 |
| 4459348 | Multi-layer elements suitable for the production of printing plates and relief plates | Mong-Jon Jun, Peter Richter | 1984-07-10 |
| 4424314 | Curable coating composition | Heinrich Hartmann, Dieter Lautenbach, Rolf Osterloh, Lutz Goethlich, Guenter Heil | 1984-01-03 |
| 4239609 | Photopolymerizable coating and recording materials containing a photoinitiator and an organic halogen compound | Dietrich Saenger | 1980-12-16 |
| 4205139 | Curable coating composition | Heinrich Hartmann, Dieter Lautenbach, Rolf Osterloh, Lutz Goethlich, Guenter Heil | 1980-05-27 |