Issued Patents All Time
Showing 51–68 of 68 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6488901 | Method of adjusting a circulating fluidized bed and use of the method | Martin Rahn, Horst Heisswolf, Marc Schnell, Bernd Erkes | 2002-12-03 |
| 6352791 | Electron-conducting layer in organic electroluminescent arrangements | Ralph Fink, Christoph Jonda, Mukundan Thelakkat, Rolf Wehrmann, Martin Hueppauff | 2002-03-05 |
| 6015539 | Fluidized bed process for producing alumina from aluminum hydroxide | Martin Rahn, Werner Stockhausen, Dietrich Werner, Martin Hirsch | 2000-01-18 |
| 5922481 | Electroluminescent arrangement | Karl-Heinz Etzbach, Frank Meyer, Wolfgang Paulus | 1999-07-13 |
| 5919441 | Cosmetic composition containing thickening agent of siloxane polymer with hydrogen-bonding groups | Michael S. Mendolia, Paul Joseph Vincenti, Morton L. Barr, Anthony Esposito, Yigal Blum +3 more | 1999-07-06 |
| 5151516 | Polymerizable perylene-3,4,9,10-tetracarbimides | Karin H. Beck, Karl-Heinz Etzbach | 1992-09-29 |
| 5084497 | Preparation of articles of manufacture from isotropic and anisotropic polyamide anion solutions | Robert Ray Burch | 1992-01-28 |
| 4866154 | Aromatic polyester from substituted hydroquinone and biphenyl dicarboxylic acid | Walter Heitz | 1989-09-12 |
| 4702945 | Optical recording medium | Karl-Heinz Etzbach, Peter Neumann, Matthias Dust, Helmut Ringsdorf, Guenter Baur +2 more | 1987-10-27 |
| 4663132 | Method of processing sodium oxalate formed during the digestion of bauxite | Walter Koch, Martin Hirsch, Karlheinz Rosenthal, Yilmaz Yetmen | 1987-05-05 |
| 4643885 | Method of processing sodium oxalate formed during the digestion of bauxite | Walter Koch, Martin Hirsch, Karlheinz Rosenthal, Yilmaz Yetmen | 1987-02-17 |
| 4631328 | Polymers containing mesogenic groups and dye radicals in the side chains | Helmut Ringsdorf, Michael Portugall, Karl-Heinz Etzbach | 1986-12-23 |
| 4548797 | Process of removing pollutants from exhaust gases | Harald Sauer, Wolfgang Fennemann | 1985-10-22 |
| 4539188 | Process of afterburning and purifying process exhaust gases | Martin Hirsch, Wolfram Schnabel, Harald Sauer | 1985-09-03 |
| 4522743 | Preparation of finely divided pulverulent carotinoid and retinoid compositions | Dieter Horn, Walter Ditter, Horst Hartmann, Erik Lueddecke, Klaus Schmieder | 1985-06-11 |
| 4425163 | Method of producing cement clinker | Hans Beisswenger, Lothar Reh, Albert Folliot, Maurice Paliard | 1984-01-10 |
| 4402754 | Process of producing cement clinker | Hans Beisswenger, Lothar Reh, Albert Folliot, Maurice P. Iard | 1983-09-06 |
| 4310501 | Process for producing hydrogen fluoride | Lothar Reh, Harald Sauer, Gunter Winkhaus, Roland Thome, Dieter Moritz | 1982-01-12 |