Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5968405 | Cobalt-coated acicular magnetic iron oxide particles | Minoru Yamasaki, Toshitada Shigemura, Katsumi Yamashita | 1999-10-19 |
| 5599378 | Spindle-shaped magnetic iron based alloy particles and process for producing the same | Akio Mishima, Tosiharu Harada, Mamoru Tanihara, Yasutaka Ota, Kenji Okinaka +4 more | 1997-02-04 |
| 5466306 | Spindle-shaped magnetic iron based alloy particles | Akio Mishima, Tosiharu Harada, Mamoru Tanihara, Yasutaka Ota, Kenji Okinaka +4 more | 1995-11-14 |
| 4851292 | Plate-like barium ferrite particles suitable for use in magnetic recording and process for producing the same | Norimichi Nagai, Akihiko Hirayama, Norio Sugita, Masao Kiyama, Toshio Takada +1 more | 1989-07-25 |
| 4806429 | Plate-like barium ferrite particles suitable for use in magnetic recording and process for producing the same | Norimichi Nagai, Akihiko Hirayama, Norio Sugita, Masao Kiyama, Toshio Takada +1 more | 1989-02-21 |
| 4781981 | Plate-like magnetoplumbite ferrite particles for magnetic recording and process for producing the same | Tsutomu Katamoto, Norimichi Nagai, Yasutaka Ota, Akihiko Hirayama, Masao Kiyama | 1988-11-01 |
| 4752407 | Process for producing plate-like barium ferrite particles | Norimichi Nagai, Yasutaka Ota, Masao Kiyama, Toshio Takada | 1988-06-21 |