Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6692849 | Magnetic recording medium comprising spindle-shaped ferromagnetic metal particles | Mikio Ohno, Toshichika Aoki | 2004-02-17 |
| 6686024 | Magnetic recording medium | Mikio Ohno, Naoto Murao, Toshichika Aoki | 2004-02-03 |
| 6607156 | Magnetic tape cassette | Naoto Murao, Tomohiro Ichikawa | 2003-08-19 |
| 6506486 | Magnetic recording medium | Mikio Ohno | 2003-01-14 |
| 6149989 | Magnetic recording particulate medium | Tsuneo Yoshida, Toshichika Aoki, Masashi Aonuma, Kazuo Kato, Kazutoshi Katayama +1 more | 2000-11-21 |
| 6037051 | Magnetic tape | Takeshi Kakuta, Hiroaki Doushita | 2000-03-14 |
| 5582910 | Magnetic recording medium | Kenichi Masuyama, Kazuo Kato, Yasuyuki Tanaka, Toshihiko Miura | 1996-12-10 |
| 5510177 | Magnetic recording medium | Kenichi Masuyama, Kazuo Kato | 1996-04-23 |
| 5387464 | Magnetic recording medium | Kazuo Kato, Kenichi Masuyama, Hiroshi Hashimoto | 1995-02-07 |
| 5176955 | Magnetic recording medium comprising ferromagnetic powder having a pH of at least 7 dispersed in a vinyl chloride copolymer using an aromatic phoshoric, phosphonic or sulfonic acid dispersant | Kiyomi Ejiri, Hiroshi Hashimoto | 1993-01-05 |
| 5156908 | Magnetic recording medium and method for producing the same | Kenichi Yoden | 1992-10-20 |
| 5139866 | Magnetic recording medium | Kenichi Yoden, Akira Ushimaru | 1992-08-18 |
| 5126215 | Magnetic recording medium having a surface with pores of specified average inlet diameter and wide pore size distribution controlled by calender treatment | Masashi Aonuma, Hiroshi Hashimoto, Tsutomu Okita, Yasuo Nishikawa | 1992-06-30 |
| 4968557 | Magnetic recording medium | Kiyomi Ejiri, Yutaka Kakuishi | 1990-11-06 |
| 4959263 | Magnetic recording medium | Masashi Aonuma, Tsutomu Okita, Hiroshi Hashimoto, Kiyotaka Fukino, Kiyomi Ejiri | 1990-09-25 |
| 4885208 | Magnetic recording medium | Kiyomi Ejiri, Takao Ohya | 1989-12-05 |
| 4851289 | Magnetic recording medium | Hiroshi Ogawa, Shinji Saito, Toshihiko Miura, Nobuo Yamazaki | 1989-07-25 |
| 4806417 | Magnetic recording medium | Shinji Saito, Kiyomi Ejiri, Hiroshi Ogawa, Chiaki Mizuno | 1989-02-21 |
| 4803131 | Magnetic recording medium | Shinji Saito, Kiyomi Ejiri, Hiroshi Ogawa, Chiaki Mizuno | 1989-02-07 |
| 4801505 | Magnetic recording medium | Kiyomi Ejiri, Akihiro Matsufuji, Akira Kasuga | 1989-01-31 |
| 4791021 | Magnetic recording medium | Kunihiko Honda, Toshihiko Miura | 1988-12-13 |
| 4576635 | Process for producing ferromagnetic metal powder | Tatsuji Kitamoto | 1986-03-18 |