Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5328769 | Gold(I) mercaptocarboxylic acid esters, method of their preparation and use | Hans Mehner | 1994-07-12 |
| 5312480 | Gold(I) mercaptocarboxylic acid esters, method of their preparation and use | Hans Mehner | 1994-05-17 |
| 5252764 | Preparation of gold (I) mercaptides | Margit Bauer | 1993-10-12 |
| 5235079 | Gold(I) mercaptocarboxylic acid esters, method of their preparation and use | Hans Mehner | 1993-08-10 |
| 4992098 | Glossy, precious-metal preparations for microwave-resistant tableware-decorations | Hans Mehner, Peter Kleinschmit | 1991-02-12 |
| 4889769 | Method of producing matte precious metal decorations | Peter Kleinschmit | 1989-12-26 |
| 4780502 | Gold polish preparation | Dieter Frembs | 1988-10-25 |