Issued Patents All Time
Showing 26–49 of 49 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4511484 | Process for preparing magnetic coating composition | Masashi Anonuma, Tsunehiko Sato, Shinichi Funabashi, Hiroshi Ogawa | 1985-04-16 |
| 4510203 | Magnetic recording medium | Hiroshi Ogawa, Chiaki Mizuno | 1985-04-09 |
| 4500599 | Magnetic recording medium | Hiroshi Ogawa, Chiaki Mizuno, Kouichi Masaki, Masaaki Suzuki | 1985-02-19 |
| 4492734 | Magnetic recording medium | Hiroshi Ogawa | 1985-01-08 |
| 4492735 | Magnetic recording medium | Hiroshi Ogawa | 1985-01-08 |
| 4478908 | Magnetic recording medium | Chiaki Mizuno | 1984-10-23 |
| 4446205 | Magnetic recording tape having a leader tape | Chiaki Mizuno, Nobuo Tsuji | 1984-05-01 |
| 4429017 | Magnetic recording medium | Hiroshi Ogawa | 1984-01-31 |
| 4420540 | Magnetic recording medium | Hiroshi Ogawa | 1983-12-13 |
| 4410565 | Method of making a magnetic recording medium | Tatsuji Kitamoto, Ryuji Shirahata | 1983-10-18 |
| 4409299 | Magnetic recording medium | Chiaki Mizuno, Akira Kasuga | 1983-10-11 |
| 4409291 | Magnetic recording medium | Hiroshi Ogawa, Akira Kasuga, Yasuyuki Yamada | 1983-10-11 |
| 4395466 | Magnetic recording medium | Hiroshi Ogawa | 1983-07-26 |
| 4354908 | Process for the production of magnetic recording members | Ryuji Shirahata, Tatsuji Kitamoto, Masaaki Suzuki | 1982-10-19 |
| 4320159 | Magnetic recording medium | Hiroshi Ogawa, Hiromi Nakahara | 1982-03-16 |
| 4309471 | Magnetic audio-recording tape | Masaaki Suzuki, Masashi Aonuma | 1982-01-05 |
| 4308311 | Magnetic recording material | Hiroshi Ogawa, Masashi Aonuma | 1981-12-29 |
| 4265931 | Process for the production of a magnetic recording member | Hiroshi Ogawa | 1981-05-05 |
| 4253886 | Corrosion resistant ferromagnetic metal powders and method of preparing the same | Masashi Aonuma | 1981-03-03 |
| 4246316 | Magnetic recording medium | Masashi Aonuma | 1981-01-20 |
| 4217152 | Process for production of ferromagnetic powder | Masashi Aonuma | 1980-08-12 |
| 4201809 | Magnetic recording medium | Hiroshi Ogawa | 1980-05-06 |
| 4197347 | High density magnetic recording media | Hiroshi Ogawa, Matsuaki Nakamura | 1980-04-08 |
| 4186228 | Magnetic recording medium | Hiroshi Ogawa, Matsuaki Nakamura | 1980-01-29 |