Issued Patents All Time
Showing 1–25 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5766372 | Method of making magnetic precursor for permanent magnets | Yutaka Matsuura, Masato Sagawa | 1998-06-16 |
| 5645651 | Magnetic materials and permanent magnets | Yutaka Matsuura, Masato Sagawa | 1997-07-08 |
| 5466308 | Magnetic precursor materials for making permanent magnets | Yutaka Matsuura, Masato Sagawa | 1995-11-14 |
| 5230749 | Permanent magnets | Masato Sagawa, Yutaka Matsuura, Hitoshi Yamamoto, Norio Togawa | 1993-07-27 |
| 5194098 | Magnetic materials | Masato Sagawa, Yutaka Matsuura | 1993-03-16 |
| 5192372 | Process for producing isotropic permanent magnets and materials | Masato Sagawa, Yutaka Matsuura | 1993-03-09 |
| 5183516 | Magnetic materials and permanent magnets | Masato Sagawa, Yutaka Matsuura | 1993-02-02 |
| 5167914 | Rare earth magnet having excellent corrosion resistance | Masato Sagawa, Hitoshi Yamamoto, Satoshi Hirosawa | 1992-12-01 |
| 5110377 | Process for producing permanent magnets and products thereof | Hitoshi Yamamoto, Masato Sagawa, Yutaka Matsuura | 1992-05-05 |
| 5096512 | Magnetic materials and permanent magnets | Masato Sagawa, Yutaka Matsuura | 1992-03-17 |
| 4975129 | Permanent magnet | Masato Sagawa, Yutaka Matsuura, Hitoshi Yamamoto, Norio Togawa | 1990-12-04 |
| 4975130 | Permanent magnet materials | Yutaka Matsuura, Masato Sagawa | 1990-12-04 |
| 4898613 | Rare earth alloy powder used in production of permanent magnets | Naoyuki Ishigaki, Takaki Hamada | 1990-02-06 |
| 4859255 | Permanent magnets | Masato Sagawa, Yutaka Matsuura, Hitoshi Yamamoto, Norio Togawa | 1989-08-22 |
| 4840684 | Isotropic permanent magnets and process for producing same | Masato Sagawa, Yutaka Matsuura | 1989-06-20 |
| 4826546 | Process for producing permanent magnets and products thereof | Hitoshi Yamamoto, Masato Sagawa, Yutaka Matsuura | 1989-05-02 |
| 4792368 | Magnetic materials and permanent magnets | Masato Sagawa, Yutaka Matsuura | 1988-12-20 |
| 4773950 | Permanent magnet | Masato Sagawa, Yutaka Matsuura, Hitoshi Yamamoto, Norio Togawa | 1988-09-27 |
| 4770702 | Process for producing the rare earth alloy powders | Naoyuki Ishigaki, Takaki Hamada | 1988-09-13 |
| 4770723 | Magnetic materials and permanent magnets | Masato Sagawa, Yutaka Matsuura | 1988-09-13 |
| 4769063 | Method for producing rare earth alloy | Naoyuki Ishigaki, Takaki Hamada | 1988-09-06 |
| 4767450 | Process for producing the rare earth alloy powders | Naoyuki Ishigaki, Takaki Hamada | 1988-08-30 |
| 4767474 | Isotropic magnets and process for producing same | Masato Sagawa, Yutaka Matsuura | 1988-08-30 |
| 4684406 | Permanent magnet materials | Yutaka Matsuura, Masato Sagawa | 1987-08-04 |
| 4601875 | Process for producing magnetic materials | Hitoshi Yamamoto, Masato Sagawa, Yutaka Matsuura | 1986-07-22 |