Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5653854 | Method and apparatus for separating isotopes | Goro Miyamoto, Seiji Hiroki, Kenji Katsuki | 1997-08-05 |
| 5632597 | Thread groove type vacuum pump | Seiji Hiroki, Tetsuya Abe, Junichi Nakamura, Masashi Iguchi | 1997-05-27 |
| 5630592 | Metal gasket, vacuum flange for the metal gasket, and vacuum seal structure using the metal gasket | Kenjiro Obara, Mitsuyosi Saito | 1997-05-20 |
| 5603788 | Method of manufacturing a ceramics-type vacuum vessel | Tetsuya Abe, Hisao Takeuchi, Akira Yamakawa, Masaya Miyake | 1997-02-18 |