Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6743394 | Case for use in sintering process to produce rare-earth magnet, and method for producing rare-earth magnet | Tsuyoshi Wada, Katsumi Okayama | 2004-06-01 |
| 6736343 | Milling apparatus and milling method | Akihito Tsujimoto, Katsumi Okayama | 2004-05-18 |
| 6696015 | Method for producing rare-earth magnet | Koki Tokuhara, Tsuyoshi Wada, Katsumi Okayama, Tomoiku Ohtani, Kunitoshi Kanno | 2004-02-24 |
| 6474576 | Milling apparatus and milling method | Akihito Tsujimoto, Katsumi Okayama | 2002-11-05 |
| 6464386 | Method and apparatus for mixing powder with liquid | Akihito Tsujimoto, Katsumi Okayama | 2002-10-15 |
| 6464931 | Case for use in sintering process to produce rare-earth magnet, and method for producing rare-earth magnet | Tsuyoshi Wada, Katsumi Okayama | 2002-10-15 |
| 6461565 | Method of pressing rare earth alloy magnetic powder | Koki Tokuhara, Shuhei Okumura | 2002-10-08 |
| 6403024 | Hydrogen pulverizer for rare-earth alloy magnetic material powder using the pulverizer, and method for producing magnet using the pulverizer | Akihito Tsujimoto, Katsumi Okayama | 2002-06-11 |
| 6247660 | Process for hydrogen-pulverizing a rare earth metal-based magnetic material, and hydrogen-pulverizing case | Yasuhiko Imai, Koki Tokuhara, Katsumi Okayama, Akihito Tsujimoto | 2001-06-19 |