Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4444636 | System for the galvanic deposition of metals such as aluminum | Richard Doetzer, Paul Hini, Johann Gehring | 1984-04-24 |
| 4427518 | Electroplating device | Hans De Vries, Siegfried Birkle, Johann Gehring | 1984-01-24 |
| 4425211 | Device for electrodeposition of aluminum | Siegfried Birkle, Johann Gehring | 1984-01-10 |
| 4419204 | Installation for the electro-deposition of metals, particularly aluminum | Siegfried Birkle, Johann Gehring | 1983-12-06 |
| 4399018 | Device for electrodeposition of aluminum | Siegfried Birkle, Johann Gehring | 1983-08-16 |
| 4392936 | Device for the galvanic deposition of aluminum | Siegfried Birkle, Johann Gehring | 1983-07-12 |
| 4382844 | Method for heating aluminum baths | Siegfried Birkle | 1983-05-10 |
| 4363712 | Device for galvanic precipitation of aluminum | Siegfried Birkle, Johann Gehring | 1982-12-14 |
| 4360409 | Apparatus for the galvanic deposition of aluminum | Siegfried Birkle, Johann Gehring | 1982-11-23 |