Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11142827 | Fluoride-free zirconium-based metal pre-treatment for passivation | Volker Geick | 2021-10-12 |
| 10870923 | Can pretreatment for improved coat adhesion | — | 2020-12-22 |
| 9771493 | Can pretreatment for improved coating adhesion | — | 2017-09-26 |
| 9512524 | Can pretreatment for improved coat adhesion | — | 2016-12-06 |
| 6537387 | Corrosion protection for galvanized and alloy galvanized steel strips | — | 2003-03-25 |
| 6461450 | Method for controlling the coating weight for strip-phosphating | Franz Ricke, Frank Panter, Dieter Geruhn, Hubertus Peters, Manfred Wessel +1 more | 2002-10-08 |
| 6346295 | Alkaline strip passivation | Heike Krautbauer | 2002-02-12 |
| 5976272 | No-rinse phosphating process | Reinhard Seidel, Bernd Mayer, Melanie Joppen, Melitta Krause | 1999-11-02 |
| 5516372 | Process for phosphating steel strip galvanized on one side | Raschad Mady, Dieter Geruhn, Frank Panter, Franz Ricke, Hubertus Peters +2 more | 1996-05-14 |
| 5372656 | Process for producing manganese-containing zinc phosphate coatings on galvanized steel | — | 1994-12-13 |
| 5312492 | Process not using chlorate or nitrite for the production of nickel and manganese containing zinc phosphate films | Kurt Hosemann, Karl-Heinz Gottwald | 1994-05-17 |
| 5207840 | Process for preparing zinc phosphate coatings containing manganese and magnesium | Karl-Heinz Gottwald, Wolf-Achim Roland | 1993-05-04 |
| 4957568 | Composition and process for activating metal surfaces prior to zinc phosphating and process for making said composition | Helmut Endres, Peter Christophliemk, Karl-Dieter Brands, Wolf-Achim Roland | 1990-09-18 |