Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5383982 | Process of producing phosphate coatings | — | 1995-01-24 |
| 5294266 | Process for a passivating postrinsing of conversion layers | Thomas Kolberg, Gerhard Muller, Horst Gehmecker, Werner Rausch, Peter Schubach +1 more | 1994-03-15 |
| 5203930 | Process of forming phosphate coatings on metal surfaces | Georg Blumlhuber, Horst Gehmecker, Lothar Kaul, Thomas Nitschke, Werner Rausch +1 more | 1993-04-20 |
| 5165795 | Method of determining the weight of conversion layers per unit of area | — | 1992-11-24 |
| 5039361 | Process of phosphating metal surfaces | Jorg Hieke, Rudolf Vey, Gunter Siemund, Han-Yong Oei | 1991-08-13 |
| 4897128 | Process of determining the zinc content of phosphating baths | Heinz Dosch, Horst Gehmecker | 1990-01-30 |
| 4867853 | Process of producing phosphate coatings | Rainer Kuhna, Gerhard Muller, Werner Rausch, Helmut Schumichen | 1989-09-19 |
| 4849031 | Process of producing phosphate coatings on metal surfaces | Gisela Beege, Peter Mischke, Werner Rausch | 1989-07-18 |
| 4597806 | Process for maintaining the zinc content in zinc phosphate baths | — | 1986-07-01 |
| 4419199 | Process for phosphatizing metals | Gerhard Muller, Werner Rausch, Gudrun Volling | 1983-12-06 |
| 4389260 | Composition and process for the phosphatizing of metals | Gerhard Muller, Werner Rausch, Josef Rothkegel, Gudrun Volling | 1983-06-21 |