Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7851628 | Conversion of perylene-3,4:9,10-tetracarboximides to a form suitable for use as fluorescent dyes | Peter Erk, Simone Schaefer, Arno Boehm, Harald Arms, Willi Helfer | 2010-12-14 |
| 7799920 | Method for producing perylene-3,4-dicarboxylic acid imides | Martin Koenemann, Helmut Reichelt | 2010-09-21 |
| 7753967 | Method for converting perylen-3,4:9,10-tetracarboxylic acid diimides into a form suitable for use as a fluorescent dye | Peter Erk, Simone Schaefer, Arno Boehm, Harald Arms, Willi Helfer | 2010-07-13 |
| 7741487 | Method for producing quaterrylene-3,4:13, 14-tetracarboxy diimides by direct synthesis | Martin Koenemann, Arno Boehm, Hermann Bidlingmaier, Reinhold Rieger, Helmut Reichelt +1 more | 2010-06-22 |
| 7550606 | 9-cyano-substituted perylene-3,4-dicarboxylic acid monoimides | Arno Boehm, Willi Helfer, Dirk Hammel, Peter Schlichting, Klaus Muellen | 2009-06-23 |
| 7446198 | 9-Cyano-substituted perylene-3, 4-dicarboxylic monoimides | Arno Boehm, Willi Helfer, Dirk Hammel, Peter Schlichting, Klaus Muellen | 2008-11-04 |
| 7105674 | Perylene-derivative based crystallization modifiers | Claus Hackmann, Paul Guenthert, Anton Dotter | 2006-09-12 |
| 6980292 | Method for the production of dyestuff pastes | Claudia Sierakowski, Ines Mangels, Zenon Paul Czornij, Thomas Krüger, Peter Hoffmann +6 more | 2005-12-27 |
| 6850310 | Cholesteric layered material having improved color stability, and the production thereof | Frank Prechtl, Norbert Schneider, Frank Meyer, Sylke Haremza, Tilmann Hezel +2 more | 2005-02-01 |
| 6784301 | Perylene-derivative based crystallization modifiers | Claus Hackmann, Paul Gunthert, Anton Dotter | 2004-08-31 |
| 6784286 | Transparent greenish yellow pyrazolone pigments | Günter Smeyts, Paul Gunthert | 2004-08-31 |
| 6656543 | Cholesteric layered material, and the production thereof | Peter Schuhmacher, Norbert Schneider, Volker Richter, Wolfgang Best, Albert Kohl +1 more | 2003-12-02 |
| 6582781 | Multilayer cholesteric pigments | Peter Schuhmacher, Norbert Schneider, Volker Richter, Harald Keller, Gunter Bettinger +3 more | 2003-06-24 |
| 6531221 | Multilayer cholesteric pigments | Peter Schuhmacher, Norbert Schneider, Raimund Schmid, Wolfgang Best, Frank Meyer | 2003-03-11 |
| 6410130 | Coatings with a cholesteric effect and method for the production thereof | Peter Schuhmacher, Norbert Schneider, Volker Richter, Harald Keller, Gunter Bettinger +5 more | 2002-06-25 |
| 6326494 | 1,7-Diaroxy- or 1,7-arylthio-substituted perylene-3,4,9,10-tetracarboxylic acids, their dianhydrides and diimides | Arno Bohm, Harald Arms, Georg Henning | 2001-12-04 |
| 6184378 | 1,7-disubstituted perylene-3,4,9,10-tetracarboxylic acids, their dianhydrides and diimides | Arno Bohm, Harald Arms, Georg Henning | 2001-02-06 |
| 6143905 | 1,7-diaroxy- or 1,7-arylthio-substituted perylene-3,4,9,10-tetracarboxylic acids, their dianhydrides and diimides | Arno Bohm, Harald Arms, Georg Henning | 2000-11-07 |
| 6099636 | N,N'-dimethylperylene-3,4,9,10-tetracarboxylic acid diimide pigments suitable for water-based paints | Georg Henning, Arno Bohm | 2000-08-08 |
| 6063181 | 1,7-disubstituted perylene-3,4,9, 10-tetracarboxylic acids, their dianhydrides and diimides of said acids | Arno Bohm, Harald Arms, Georg Henning | 2000-05-16 |