Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5622525 | Method of polishing a surface of copper or an alloy comprising mainly copper | Jan Haisma, Dirk Kornelis Gerhardus De Boer, Waltherus Van Den Hoogenhof, Lambertus Postma | 1997-04-22 |