Okajima; Yasuhiro
Patent Applications and Registrations
Patent applications and USPTO patent grants for Okajima; Yasuhiro.The latest application filed is for "powder material for rare earth-iron-boron based permanent magnets".
- Okajima; Yasuhiro - Niihama JP
- Okajima; Yasuhiro - Ichikawa JA
| Patent | Date |
|---|---|
| Powder material for rare earth-iron-boron based permanent magnets Grant 5,281,250 - Hamamura , et al. January 25, 1 | 1994-01-25 |
| Process for producing alloy powder containing rare earth metals Grant 4,681,623 - Okajima , et al. July 21, 1 | 1987-07-21 |
| Process for treating manganese nodules Grant 4,029,498 - Okajima June 14, 1 | 1977-06-14 |
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