Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6372290 | Method of making a temperature and scratch resistant anti-sticking coating | Herbert Berkenkoetter, Thomas Kruempelmann, Walter Mangen, Ulrich Sillmen | 2002-04-16 |
| 5080723 | Process and device for recovering the enamel slimes in electro-immersion enameling plants | Heinrich Warnke | 1992-01-14 |
| 4707385 | Method for directly enameling steel parts using a single enamel coating | Heinrich Warnke, Bernhard Bersch, Willi Mertinkat, Ulrich Tenhaven | 1987-11-17 |
| 4466871 | Method for electrophoretic enameling | Heinrich Warnke | 1984-08-21 |