Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851673 | Secondary ion mass spectrometer | Hiroshi Iwamoto, Eisuke Mitani, Hiroyasu Shichi | 1989-07-25 |
| 4833331 | Method of holding an electrically insulating sample | Yoshinori Ikebe, Hifumi Tamura | 1989-05-23 |