Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5637028 | Method of polishing a surface of a noble metal | Jan Haisma, Cornelis L. Adema, Mathijs P. H. Souts | 1997-06-10 |
| 5622525 | Method of polishing a surface of copper or an alloy comprising mainly copper | Jan Haisma, Peter W. De Haas, Dirk Kornelis Gerhardus De Boer, Waltherus Van Den Hoogenhof | 1997-04-22 |