Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6078237 | Rare earth-based permanent magnet material and method for the preparation thereof | Tadao Nomura, Ken Ohashi, Takehisa Minowa, Masaru Ito | 2000-06-20 |
| 5930582 | Rare earth-iron-boron permanent magnet and method for the preparation thereof | Masaru Ito, Ken Ohashi, Tadao Nomura, Takehisa Minowa | 1999-07-27 |
| 5720861 | Magnetic recording medium | Hideo Kaneko, Katsushi Tokunaga | 1998-02-24 |
| 5643650 | Magneto-optical recording medium | Katsushi Tokunaga, Hideo Kaneko, Yoshiaki Shimizu | 1997-07-01 |
| 5591502 | Magnetic recording medium | Hideo Kaneko, Katsushi Tokunaga | 1997-01-07 |
| 5582897 | Magnetic recording medium | Hideo Kaneko, Katsushi Tokunaga | 1996-12-10 |
| 5554303 | Magnetic recording medium preparation | Hideo Kaneko, Katsushi Tokunaga, Noboru Tamai, Yasuaki Nakazato | 1996-09-10 |
| 5514468 | Magneto-optical recording medium | Hideo Kaneko, Katsushi Tokunaga, Yoshiaki Shimizu, Tadao Nomura | 1996-05-07 |
| 5118573 | Magneto-optical recording medium | Katsushi Tokunaga, Tadao Nomura, Yoshiaki Shimizu, Yoshihiro Kubota, Meguru Kashida | 1992-06-02 |
| 5057165 | Rare earth permanent magnet and a method for manufacture thereof | Hiroaki Nagata, Ken Ohashi, Kenichi Uesaka | 1991-10-15 |
| 5034146 | Rare earth-based permanent magnet | Ken Ohashi | 1991-07-23 |
| 5024423 | Semiconductor diffusion furnace inner tube | Fukuji Matsumoto, Michio Hayashi, Osamu Yamada | 1991-06-18 |
| 4999228 | Silicon carbide diffusion tube for semi-conductor | Fukuji Matsumoto, Michio Hayashi | 1991-03-12 |
| 4971637 | Rare earth permanent magnet | Ken Ohashi, Ryo Osugi | 1990-11-20 |
| 4678634 | Method for the preparation of an anisotropic sintered permanent magnet | Ken Ohashi | 1987-07-07 |
| 4567576 | Method for producing a magnetic bias field | Ken Ohashi, Hideaki Kikuchi | 1986-01-28 |
| 4497672 | Method for the preparation of a rare earth-cobalt based permanent magnet | Ken Ohashi | 1985-02-05 |
| 4375996 | Rare earth metal-containing alloys for permanent magnets | Tetsuichi Chino, Ken Ohashi | 1983-03-08 |