Issued Patents All Time
Showing 25 most recent of 39 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8163398 | Leather production method and products suited thereof | Oliver Reese, Stephan Huffer, Guenter Scherr | 2012-04-24 |
| 7132482 | Method for vulcanizing caoutchouc or latex by applying a mixture of sulfur and a complexing agent | Joern Tidow, Herbert Scholz, Fritz Nimtz, Michael Stang, Thomas Danner +4 more | 2006-11-07 |
| 6340745 | Phthalocyanine and use of phthalocyanine as a marking agent | Frank Meyer, Christos Vamvakaris, Karin H. Beck, Gerhard Wagenblast | 2002-01-22 |
| 5998211 | Use of compounds which absorb and/or fluoresce in the IR region as markers for liquids | Juergen Kipper, Christos Vamvakaris, Karin H. Beck, Gerhard Wagenblast | 1999-12-07 |
| 5804447 | Use of compounds which absorb and/or fluoresce in the IR region as markers for liquids | Juergen Kipper, Christos Vamvakaris, Karin H. Beck, Gerhard Wagenblast | 1998-09-08 |
| 5783694 | IR-absorbing phthalocyanines | Helmut Hagen | 1998-07-21 |
| 5656752 | Preparation of naphthalocyanines | Juergen Kipper | 1997-08-12 |
| 5607762 | Ink-ribbons comprising IR-absorbing compounds | Juergen Kipper, Friedrich Closs, Helmut Bellaire | 1997-03-04 |
| 5573585 | Molecular sieves containing azo dyes | Guenter Lauth, Wolfgang Hoelderich, Gerhard Wagenblast, Gunther Lamm, Helmut Reichelt +2 more | 1996-11-12 |
| 5554318 | Use of compounds which absorbs and fluoresce in the IR range as crack-detecting agents | Peter Neumann, J urgen Kipper, Gerhard Wagenblast | 1996-09-10 |
| 5512095 | Naphthalocyanines | Benno Sens, Andres Carlos Garcia Espino, Juergen Kipper | 1996-04-30 |
| 5468596 | Photosensitive recording element and production of a relief printing plate | Thomas Loerzer, Thomas Telser, Thomas Zwez | 1995-11-21 |
| 5445672 | Laked tris- or tetracationic polymethine dyes | Friedrich Closs, Henning Wienand | 1995-08-29 |
| 5410053 | Rhodamine derivatives | Erwin Hahn, Claudia Kraeh, Udo Mayer, Walter Denzinger | 1995-04-25 |
| 5405968 | Polyketomethine dyes | Knut Kessel, Hans-Dieter Martin, Stefan Silber | 1995-04-11 |
| 5338848 | Indolizinetrimethine dyes | Michael Acker, Michael Schmitt | 1994-08-16 |
| 5282894 | Use of a liquid containing IR dyes as printing ink | Friedrich Closs, Juergen Kipper, Walter Kurtz, Karin H. Beck, Rudolf Griebel | 1994-02-01 |
| 5235573 | Repositioning laser beams in information storage media | Klaus D. Schomann, Peter Hammerschmitt, Sibylle Brosius, Kal-Heinz Feuerherd, Michael Schmitt +1 more | 1993-08-10 |
| 5221751 | Heterocyclic polymethine dyes with carbamate or amide groups | Michael Acker, Sibylle Brosius, Klaus D. Schomann, Harald Kuppelmaier | 1993-06-22 |
| 5169975 | Binary azulenesquaric acid dyes, their intermediates and optical recording medium | Michael Schmitt, Sibylle Brosius, Klaus D. Schomann, Harald Kuppelmaier | 1992-12-08 |
| 5162045 | Transferring dyes for thermal printing | Karl-Heinz Etzbach, Ruediger Sens | 1992-11-10 |
| 5124240 | Optical recording medium | Sibylle Brosius, Michael Schmitt, Klaus D. Schomann, Harald Kuppelmaier, Ulrich Harten | 1992-06-23 |
| 5122435 | Amido-containing azulene squaric acid dyes, intermediates therefor and optical recording medium | Michael Schmitt, Sibylle Brosius, Klaus D. Schomann, Harald Kuppelmaier | 1992-06-16 |
| 5101032 | Cycloalkylidene dyes | Hans-Dieter Martin, Knut Kessel | 1992-03-31 |
| 5064702 | Quinoxalinepentamethine dyes and optical recording medium containing same | Michael Acker, Peter Neumann, Sibylle Brosius, Klaus D. Schomann, Harald Kuppelmaier | 1991-11-12 |