Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8157927 | Raw material alloy for R-T-B system sintered magnet, R-T-B system sintered magnet and production method thereof | Yasushi Enokido, Chikara Ishizaka | 2012-04-17 |
| 7740716 | Rare earth sintered magnet | Yasushi Enokido, Chikara Ishizaka | 2010-06-22 |
| 7416613 | Method for compacting magnetic powder in magnetic field, and method for producing rare-earth sintered magnet | Tsutomu Chou, Masatoshi Hatakeyama, Chikara Ishizaka | 2008-08-26 |
| 7314531 | R-T-B system rare earth permanent magnet | Chikara Ishizaka, Tetsuya Hidaka, Akira Fukuno, Yoshinori Fujikawa | 2008-01-01 |
| 7311788 | R-T-B system rare earth permanent magnet | Chikara Ishizaka, Tetsuya Hidaka, Akira Fukuno, Yoshinori Fujikawa | 2007-12-25 |
| 7255751 | Method for manufacturing R-T-B system rare earth permanent magnet | Chikara Ishizaka, Tetsuya Hidaka, Akira Fukuno | 2007-08-14 |
| 7255752 | Method for manufacturing R-T-B system rare earth permanent magnet | Chikara Ishizaka, Tetsuya Hidaka, Akira Fukuno, Nobuya Uchida | 2007-08-14 |
| 7192493 | R-T-B system rare earth permanent magnet and compound for magnet | Chikara Ishizaka, Tetsuya Hidaka, Akira Fukuno | 2007-03-20 |
| 6811620 | R-T-B system rare earth permanent magnet | Chikara Ishizaka, Tetsuya Hidaka, Akira Fukuno, Nobuya Uchida | 2004-11-02 |
| 5834663 | Sintered magnet and method for making | Akira Fukuno, Hideki Nakamura | 1998-11-10 |
| 5641363 | Sintered magnet and method for making | Akira Fukuno, Hideki Nakamura | 1997-06-24 |