Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5415689 | Two-component epoxy resin/zinc dust priming coat for steel surfaces | Guido Wekenmann, deceased, Sabine Zipperlen, nee Harenz | 1995-05-16 |
| 5393567 | Powder mixture for making an undercoating agent for steel surfaces | Guido Wekenmann, deceased, Siglinde Herzog nee Kress | 1995-02-28 |