Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6190520 | Impurity measuring device | Yumi Sasaki | 2001-02-20 |
| 5882504 | Method of measuring impurities | Yumi Sasaki | 1999-03-16 |
| 5426057 | Method of measuring amount of organic material adsorbed to surface of semiconductor substrate | — | 1995-06-20 |