Issued Patents All Time
Showing 101–119 of 119 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6623541 | Sintered rare earth magnet and making method | Kazuaki Sakaki, Masanobu Shimao, Hajime Nakamura | 2003-09-23 |
| 6547889 | Iron-based alloy sheet for magnetic yokes in hard-disk voice-coil motor | Masanobu Shimao, Masaaki Nishino | 2003-04-15 |
| 6527822 | Quenched thin ribbon of rare earth/iron/boron-based magnet alloy | Koichi Hirota, Takahiro Hashimoto, Koji Sato, Kenji Yamamoto | 2003-03-04 |
| 6517427 | Abrasive-bladed multiple cutting wheel assembly | Masao Yoshikawa | 2003-02-11 |
| 6506265 | R-Fe-B base permanent magnet materials | Kenji Yamamoto, Koro Tatami | 2003-01-14 |
| 6419723 | Thin ribbon of rare earth-based permanent magnet alloy | Koichi Hirota, Takahiro Hashimoto, Koji Sato, Kenji Yamamoto | 2002-07-16 |
| 6322637 | Thin ribbon of rare earth-based permanent magnet alloy | Koichi Hirota, Takahiro Hashimoto, Koji Sato, Kenji Yamamoto | 2001-11-27 |
| 6319335 | Quenched thin ribbon of rare earth/iron/boron-based magnet alloy | Koichi Hirota, Takahiro Hashimoto, Koji Sato, Kenji Yamamoto | 2001-11-20 |
| 6296720 | Rare earth/iron/boron-based permanent magnet alloy composition | Kenji Yamamoto, Koro Tatami | 2001-10-02 |
| 6262507 | Permanent magnet motor and rotor thereof | Koji Sato, Koji Miyata | 2001-07-17 |
| 6224986 | Rare earth permanent magnet of high corrosion resistance | Masao Yoshikawa, Ryuji Hamada | 2001-05-01 |
| 6214288 | Method for the preparation of a rare earth permanent magnet | Matou Kusunoki | 2001-04-10 |
| 6174609 | Rare earth-based permanent magnet of high corrosion resistance | Kenichi Katsumi | 2001-01-16 |
| 6078237 | Rare earth-based permanent magnet material and method for the preparation thereof | Tadao Nomura, Ken Ohashi, Yoshio Tawara, Masaru Ito | 2000-06-20 |
| 6012977 | Abrasive-bladed cutting wheel | Masao Yoshikawa | 2000-01-11 |
| 5930582 | Rare earth-iron-boron permanent magnet and method for the preparation thereof | Masaru Ito, Ken Ohashi, Yoshio Tawara, Tadao Nomura | 1999-07-27 |
| 5840375 | Method for the preparation of a highly corrosion resistant rare earth based permanent magnet | Kenichi Katsumi, Masao Yoshikawa | 1998-11-24 |
| 5405455 | Rare earth-based permanent magnet | Matou Kusunoki, Masao Yoshikawa | 1995-04-11 |
| 5013411 | Method for producing a corrosion resistant rare earth-containing magnet | Masao Yoshikawa | 1991-05-07 |