Issued Patents All Time
Showing 26–33 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6491765 | Rare earth magnet and method for manufacturing the same | Naoyuki Ishigaki, Shuhei Okumura | 2002-12-10 |
| 6474576 | Milling apparatus and milling method | Akiyasu Oota, Akihito Tsujimoto | 2002-11-05 |
| 6473024 | Electromagnetic wave absorber | Junichi Toyoda, Sakan Iwashita | 2002-10-29 |
| 6464386 | Method and apparatus for mixing powder with liquid | Akiyasu Oota, Akihito Tsujimoto | 2002-10-15 |
| 6464931 | Case for use in sintering process to produce rare-earth magnet, and method for producing rare-earth magnet | Akiyasu Oota, Tsuyoshi Wada | 2002-10-15 |
| 6403024 | Hydrogen pulverizer for rare-earth alloy magnetic material powder using the pulverizer, and method for producing magnet using the pulverizer | Akiyasu Oota, Akihito Tsujimoto | 2002-06-11 |
| 6247660 | Process for hydrogen-pulverizing a rare earth metal-based magnetic material, and hydrogen-pulverizing case | Yasuhiko Imai, Koki Tokuhara, Akiyasu Oota, Akihito Tsujimoto | 2001-06-19 |
| 5281250 | Powder material for rare earth-iron-boron based permanent magnets | Atsushi Hamamura, Yuji Kaneko, Yasuhiro Okajima, Kaname Takeya, Shuji Okada | 1994-01-25 |