Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5316595 | Process for producing magnets having improved corrosion resistance | Tetsuji Hayakawa, Yutaka Matsuura | 1994-05-31 |
| 5089066 | Magnets having improved corrosion resistance | Tetsuji Hayakawa, Yutaka Matsuura | 1992-02-18 |
| 4968529 | Process for producing a corrosion resistant permanent magnet | Atsushi Hamamura, Hiroko Nakamura, Tomoyuki Imai, Toshiki Matsui, Nanao Horiishi | 1990-11-06 |
| 4959273 | Corrosion-resistant permanent magnet and method for preparing the same | Atsushi Hamamura, Kouki Tokuhara, Yukimitsu Miyao, Tomoyuki Imai, Nanao Horiishi | 1990-09-25 |
| 4942098 | Corrosion resistant permanent magnet | Atsushi Hamamura, Hiroko Nakamura, Tomoyuki Imai, Toshiki Matsui, Nanao Horiishi | 1990-07-17 |
| 4898613 | Rare earth alloy powder used in production of permanent magnets | Naoyuki Ishigaki, Setsuo Fujimura | 1990-02-06 |
| 4837114 | Process for producing magnets having improved corrosion resistance | Tetsuji Hayakawa, Yutaka Matsuura | 1989-06-06 |
| 4770702 | Process for producing the rare earth alloy powders | Naoyuki Ishigaki, Setsuo Fujimura | 1988-09-13 |
| 4769063 | Method for producing rare earth alloy | Naoyuki Ishigaki, Setsuo Fujimura | 1988-09-06 |
| 4767450 | Process for producing the rare earth alloy powders | Naoyuki Ishigaki, Setsuo Fujimura | 1988-08-30 |