Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4670066 | Process for the treatment by chemical conversion of substrates of zinc or of one of its alloys, concentrate and bath used for performing this process | Joseph Schapira, Victor Ken, Francois-Joseph Duboys | 1987-06-02 |