Issued Patents All Time
Showing 51–65 of 65 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5294266 | Process for a passivating postrinsing of conversion layers | Dieter Hauffe, Thomas Kolberg, Gerhard Muller, Horst Gehmecker, Peter Schubach +1 more | 1994-03-15 |
| 5268041 | Process for phosphating metal surfaces | Horst Gehmecker, Peter Schubach | 1993-12-07 |
| 5236565 | Process of phosphating before electroimmersion painting | Gerhard Muller | 1993-08-17 |
| 5203930 | Process of forming phosphate coatings on metal surfaces | Georg Blumlhuber, Horst Gehmecker, Dieter Hauffe, Lothar Kaul, Thomas Nitschke +1 more | 1993-04-20 |
| 5152849 | Phosphating process | Klaus Bittner, Gerhard Muller, Klaus Wittel | 1992-10-06 |
| 5024707 | Process of decreasing the incrustation in phosphating plants | — | 1991-06-18 |
| 4950339 | Process of forming phosphate coatings on metals | Horst Gehmecker, Peter Jorns | 1990-08-21 |
| 4867853 | Process of producing phosphate coatings | Dieter Hauffe, Rainer Kuhna, Gerhard Muller, Helmut Schumichen | 1989-09-19 |
| 4849031 | Process of producing phosphate coatings on metal surfaces | Dieter Hauffe, Gisela Beege, Peter Mischke | 1989-07-18 |
| 4637838 | Process for phosphating metals | Gerhard Mueller | 1987-01-20 |
| 4559087 | Process for phosphating metals | Peter Jorns, Norbert Meyer, Josef Rothkegel, Gunther Luckhardt, Gudrun Volling | 1985-12-17 |
| 4547269 | Method of electrodepositing zinc on steel prior to phosphating | Gerhard Muller | 1985-10-15 |
| 4419199 | Process for phosphatizing metals | Dieter Hauffe, Gerhard Muller, Gudrun Volling | 1983-12-06 |
| 4389260 | Composition and process for the phosphatizing of metals | Dieter Hauffe, Gerhard Muller, Josef Rothkegel, Gudrun Volling | 1983-06-21 |
| 4265677 | Phosphatizing prior to cathodic electropainting | Gerhard Muller | 1981-05-05 |