Issued Patents All Time
Showing 51–58 of 58 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4581115 | Apparatus for the precipitation of copper from a liquid electrolyte conducted through a multi-cell electrolytic tank | — | 1986-04-08 |
| 4576677 | Method and apparatus for regenerating an ammoniacal etching solution | Wolfgang Faul, Leander Furst, Bertel Kastening | 1986-03-18 |
| 4564428 | Ammoniated etching solution and process for its regeneration utilizing ammonium chloride addition | Leander Furst, Bertel Kastening | 1986-01-14 |
| 4557811 | Regeneration of an ammoniacal etching solution with recycling of solution with electrolytically reduced metal content to the regeneration input | Leander Furst | 1985-12-10 |
| 4509328 | Thermo-electric responsive device | — | 1985-04-09 |
| 4418886 | Electro-magnetic valves particularly for household appliances | — | 1983-12-06 |
| 4385969 | Method of regenerating an ammoniacal etching solution | Bertel Kastening, Wolfgang Faul, Leander Furst | 1983-05-31 |
| 4383418 | Circulator pump for conveying a liquid and/or gaseous medium | — | 1983-05-17 |