Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6153296 | Acicular hematite particles and magnetic recording medium | Kazuyuki Hayashi, Keisuke Iwasaki, Hiroko Morii | 2000-11-28 |
| 5599378 | Spindle-shaped magnetic iron based alloy particles and process for producing the same | Akio Mishima, Mamoru Tanihara, Yasutaka Ota, Kenji Okinaka, Kohji Mori +4 more | 1997-02-04 |
| 5582914 | Magnetic iron oxide particles and method of producing the same | Atsushi Takedoi, Mamoru Tanihara, Masaru Isoai, Kazuhiro Fujita | 1996-12-10 |
| 5480571 | Process for producing acicular goethite particles and acicular magnetic iron oxide particles | Masaru Isoai, Tokihiro Kurata, Kazuhiro Fujita, Kazushi Takama, Shigekazu Jikuhara | 1996-01-02 |
| 5466306 | Spindle-shaped magnetic iron based alloy particles | Akio Mishima, Mamoru Tanihara, Yasutaka Ota, Kenji Okinaka, Kohji Mori +4 more | 1995-11-14 |
| 5399278 | Process for producing acicular goethite particles and acicular magnetic iron oxide particles | Katsumi Yamashita, Haruki Kurokawa, Kazuhisa INABA, Hideaki Sadamura, Tomohisa Moriya +1 more | 1995-03-21 |
| 5378380 | Process for producing acicular geothite particles and acicular magnetic iron oxide particles | Masaru Isoai, Tokihiro Kurata, Kazuhiro Fujita, Kazushi Takama, Shigekazu Jikuhara | 1995-01-03 |
| 5314750 | Magnetic iron oxide particles and method of producing same | Atsushi Takedoi, Mamoru Tanihara, Masaru Isoai, Kazuhiro Fujita | 1994-05-24 |
| 4873010 | Spindle-like magnetic iron oxide particles and process for producing the same | Atsushi Takedoi, Hiroyuki Kondo, Masaru Isoai, Yoshitaka Yoshinaga, Yosiro Okuda +3 more | 1989-10-10 |
| 4514216 | Acicular ferromagnetic alloy particles for magnetic recording and process for producing the same | Akio Mishima, Yoshiro Okuda, Akira Mukaizaka, Tomoyuki Imai | 1985-04-30 |
| 4495164 | Process for producing acicular magnetite or acicular maghemite | Yosiro Okuda | 1985-01-22 |
| 4437881 | Acicular ferromagnetic alloy particles and process for producing said particles | Akio Mishima, Yoshiro Okuda, Akira Mukaizaka, Tomoyuki Imai | 1984-03-20 |
| 4406694 | Process for producing acicular ferromagnetic alloy particles and acicular ferromagnetic alloy particles obtained by the said process | Akio Mishima, Yosiro Okuda, Akira Mukaizaka | 1983-09-27 |