Issued Patents All Time
Showing 25 most recent of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12183493 | Ferrite sintered magnet, ferrite particles, bonded magnet, motor, and generator | Junnichi Nagaoka, Yuichi Sugawara, Jo SATO | 2024-12-31 |
| 11810699 | Ferrite sintered magnet, ferrite particles, bonded magnet, motor, and generator | Junnichi Nagaoka, Yuichi Sugawara, Jo SATO | 2023-11-07 |
| 11569013 | Ferrite magnet | Junnichi Nagaoka | 2023-01-31 |
| 11417447 | Ferrite magnet | Junnichi Nagaoka | 2022-08-16 |
| 9627112 | Sintered ferrite magnet and motor provided therewith | Yoshitaka Murakawa, Naoharu Tanigawa, Yoshihiko Minachi | 2017-04-18 |
| 9589713 | Sintered ferrite magnet and motor provided therewith | Yoshitaka Murakawa, Naoharu Tanigawa, Yoshihiko Minachi | 2017-03-07 |
| 9530548 | Method for manufacturing Sr ferrite particle for sintered magnet, method for using Sr ferrite particle, Sr ferrite sintered magnet and method for manufacturing same, and motor and generator | — | 2016-12-27 |
| 9514871 | Sintered ferrite magnet and motor provided therewith | — | 2016-12-06 |
| 9460835 | Sintered ferrite magnet and motor provided therewith | — | 2016-10-04 |
| 7084603 | Motor control device | Takeshi Kitahata, Yosuke Nakazawa | 2006-08-01 |
| 6908568 | Preparation of oxide magnetic material and oxide magnetic material | Kiyoyuki Masuzawa | 2005-06-21 |
| 6402980 | Oxide magnetic material, ferrite particles, bonded magnet, sintered magnet, process for producing the same, and magnetic recording medium | Kiyoyuki Masuzawa, Yoshihiko Minachi, Kazumasa Iida, Miyuki Kawakami | 2002-06-11 |
| 6258290 | Magnet powder, sintered magnet, process for producing them, bonded magnet, motor and magnetic recording medium | Kiyoyuki Masuzawa, Yoshihiko Minachi, Kazumasa Iida, Mitsuaki Sasaki, Fumihiko Hirata | 2001-07-10 |
| 6248253 | Hexagonal ferrite magnets | Kiyoyuki Masuzawa, Yoshihiko Minachi, Kazumasa Iida | 2001-06-19 |
| 6139766 | Oxide magnetic material, ferrite particle, sintered magnet, bonded magnet, magnetic recording medium and motor | Kazumasa Iida, Kikoyuki Masuzawa, Yoshihiko Minachi | 2000-10-31 |
| 6132635 | Process for the production of anisotropic ferrite magnets and anisotropic ferrite magnets as well as hexagonal system ferrite particles and their production process | Fumihiko Hirata, Taku Takeishi, Teruo Mori | 2000-10-17 |
| 6086781 | Magnet powder, sintered magnet, process for producing them, bonded magnet, motor and magnetic recording medium | Kiyoyuki Masuzawa, Yoshihiko Minachi, Kazumasa Iida, Mitsuaki Sasaki, Fumihiko Hirata | 2000-07-11 |
| 6027784 | Connecting rod | — | 2000-02-22 |
| 5951937 | Preparation of oxide magnetic material | Kiyoyuki Masuzawa, Yoshihiko Minachi, Kazumasa Iida | 1999-09-14 |
| 5945028 | Hexagonal system ferrite particles and their production process | Fumihiko Hirata, Taku Takeishi, Teruo Mori | 1999-08-31 |
| 5846449 | Magnet powder, sintered magnet, bonded magnet, and magnetic recording medium | Kenichiro Suwa, Taku Takeishi | 1998-12-08 |
| 5811024 | Preparation of anisotropic hexagonal barium ferrite sintered magnet | Fumihiko Hirata, Taku Takeishi, Teruo Mori | 1998-09-22 |
| 5648039 | Process for the production of anisotropic ferrite magnets | Fumihiko Hirata, Taku Takeishi, Teruo Mori | 1997-07-15 |
| 5607615 | Hexagonal ba-ferrite sintered magnet, its making method, and polar anisotropy ring magnet | Fumihiko Hirata, Taku Takeishi, Teruo Mori | 1997-03-04 |
| 5521347 | Switch device | Satoru Imaeda, Yoshinobu Sugiyama | 1996-05-28 |