Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5278407 | Secondary-ion mass spectrometry apparatus using field limiting method | Hifumi Tamura, Hiroyuki Sumiya, Akemi Furuki | 1994-01-11 |
| 4992661 | Method and apparatus for neutralizing an accumulated charge on a specimen by means of a conductive lattice deposited on the specimen | Hifumi Tamura, Katsuhiko Muroyama, Hiroyuki Sumiya | 1991-02-12 |
| 4833331 | Method of holding an electrically insulating sample | Hifumi Tamura, Eiichi Izumi | 1989-05-23 |
| 4774433 | Apparatus for generating metal ions | Hifumi Tamura, Hiroyasu Shichi, Eiichi Izumi | 1988-09-27 |