Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10793961 | Method of obtaining a 18 carats 3N gold alloy | Thomas Froelicher, Guido Plankert | 2020-10-06 |
| 10053789 | Method of obtaining a 18 caracts 3N gold alloy | Thomas Foelicher, Guido Plankert | 2018-08-21 |
| 9567684 | Method of obtaining a yellow gold alloy deposition by galvanoplasty without using toxic materials | Guido Plankert | 2017-02-14 |
| 8226810 | Galvanic deposition method for an anthracite coloured coating and metallic parts provided with the coating | — | 2012-07-24 |