Issued Patents All Time
Showing 26–50 of 57 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6136251 | Process for producing pigment particles of defined shape and size | Karl-Heinz Etzbach, Harald Keller, Tillmann Faust, Peter Schuhmacher, Karl Siemensmeyer | 2000-10-24 |
| 5798147 | Process for coating and printing substrates | Erich Beck, Frank Meyer, Ulrich Poth, Karl Siemensmeyer, Claudia Sierakowski +6 more | 1998-08-25 |
| 5176962 | Methacrylate (co)polymers containing carbazolyl side groups and electropohotographic recording elements containing the said (co)polymers | Harald Lauke, Bernhard Nick, Peter Strohriegl, Dietrich Haarer | 1993-01-05 |
| 5116911 | Methacrylate (co)polymers containing carbazolyl side groups and electrophotographic recording elements containing the said (co)polymers | Harald Lauke, Bernhard Nick, Peter Strohriegl, Dietrich Haarer | 1992-05-26 |
| 5100971 | Preparation of carbazole-substituted polyacrylates or polymethacrylates, the products thus prepared and their use | Harald Lauke, Peter Strohriegl, Dietrich Haarer | 1992-03-31 |
| 5069991 | Panchromatic electrophotographic recording element containing multiple carrier-producing sensentizers | Peter Neumann, Matthias Dust | 1991-12-03 |
| 4939068 | Anodic oxidation of the surface of aluminum or aluminum alloys | Harald Lauke, Bernhard Nick | 1990-07-03 |
| 4935330 | Photopolymerizable mixture, photosensitive recording element containing this mixture, and the production of lithographic printing plate using this photosensitive recording element | Gerhard Hofmann, Reiner Hoffman, Harald Lauke, Wilhelm Weber | 1990-06-19 |
| 4935332 | Photosensitive element having an aluminum base and silane intermediate layer | Harald Lauke, Wilhelm Weber, Bernhard Nick, Thomas Loerzer | 1990-06-19 |
| 4924003 | Pyrazoline compounds | Peter Neumann | 1990-05-08 |
| 4906541 | Electrophotographic recording element containing a naphtholactam dye sensitizer | Matthias Dust, Peter Neumann | 1990-03-06 |
| 4883732 | Method of forming printing plate using isoindolenine deratives | Peter Neumann | 1989-11-28 |
| 4880718 | Electrophotographic recording element with isoindolenine derivatives | Peter Neumann | 1989-11-14 |
| 4866183 | Preparation of hexaarylbisimidazoles | Uwe Kempe, Toni Dockner, Helmut Karn, Thomas Bluemel, Thomas Loerzer | 1989-09-12 |
| 4857438 | Photochromic system and layers produced therewith | Thomas Loerzer | 1989-08-15 |
| 4789622 | Production of resist images, and a suitable dry film resist | Gerhard Wegner, Michael Mueller | 1988-12-06 |
| 4782000 | Electrophotographic recording elements with hydrolyzed silane layer | Harald Lauke, Bernhard Nick, Thomas Loerzer | 1988-11-01 |
| 4770976 | Phenanthroimidazole compounds, their preparation, photopolymerizable coating and recording materials, and lithographic layers produced using these | Thomas Loerzer | 1988-09-13 |
| 4743521 | Electrophotographic material with mxiture of charge transport materials | Gerhard Hoffmann, Peter Neumann | 1988-05-10 |
| 4734444 | Curable mixtures containing N-sulfonylaminosulfonium salts as cationically active catalysts | Andreas Henne, Wolfram Ochs, Helmut Tesch, Gunnar Schornick | 1988-03-29 |
| 4649100 | Production of resist images, and a suitable dry film resist | Gerhard Wegner, Michael Mueller | 1987-03-10 |
| 4640960 | Degradation of poly(diacetylenes) | Gerhard Wegner, Michael Mueller | 1987-02-03 |
| 4632897 | Photopolymerizable recording material suitable for the production of photoresist layers | Helmut Barzynski, Albrecht Eckell, Albert Elzer, Uwe Klinsmann, Axel Sanner | 1986-12-30 |
| 4599293 | Toner transfer process for transferring and fixing a toner image by means of film | Albrecht Eckell, Albert Elzer, Gerhard Hoffmann, Heinz-Ulrich Werther | 1986-07-08 |
| 4579806 | Positive-working photosensitive recording materials | Hans Schupp, Albert Elzer, Klaus Jaeckel | 1986-04-01 |