Issued Patents All Time
Showing 76–93 of 93 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4560616 | Magnetic recording medium having binder cured by electron beam radiation | Kyoichi Naruo, Hiroshi Hashimoto | 1985-12-24 |
| 4548833 | Method for preparing a magnetic recording medium | Hiroshi Hashimoto | 1985-10-22 |
| 4533565 | Method for surface treatment of ferromagnetic fine powder and forming a magnetic recording device | — | 1985-08-06 |
| 4520070 | Magnetic recording medium and process for producing same | Nobuyuki Yamamoto, Yasuo Nishikawa, Kyoichi Naruo | 1985-05-28 |
| 4518656 | Magnetic recording medium and process for producing the same | Kyoichi Naruo | 1985-05-21 |
| 4486500 | Magnetic recording medium | Kyoichi Naruo, Nobuyuki Yamamoto | 1984-12-04 |
| 4482578 | Method for preparing magnetic recording media | Goro Akashi, Tatsuji Kitamoto | 1984-11-13 |
| 4482610 | Magnetic recording medium and process for producing the same | Kyoichi Naruo | 1984-11-13 |
| 4481231 | Method for production of magnetic recording media | Hiroshi Hashimoto, Noburo Hibino | 1984-11-06 |
| 4468436 | Magnetic recording material | Kiritani Masataka | 1984-08-28 |
| 4448848 | Magnetic recording medium and process for producing the same | Kyoichi Naruo | 1984-05-15 |
| 4443514 | Magnetic recording medium | Nobuyuki Yamamoto, Yasuo Nishikawa, Yuji Andou, Kyoichi Naruo | 1984-04-17 |
| 4428974 | Process for producing magnetic recording material | Kyoichi Naruo, Akira Ushimaru | 1984-01-31 |
| 4407853 | Process for producing a magnetic recording medium | Kyoichi Naruo, Goro Akashi | 1983-10-04 |
| 4405481 | Magnetic recording medium | Yasuyuki Yamada, Nobuo Tsuji, Yasuo Mukunoki | 1983-09-20 |
| 4391874 | Magnetic recording medium | Nobuyuki Yamamoto, Kyoichi Naruo | 1983-07-05 |
| 4215030 | Photographic polyester film support | Masami Satou, Noburo Hibino, Kazunobu Katoh, Hiroshi Sawaguchi | 1980-07-29 |
| 4191679 | Photographic polyester film support | Masami Satou, Noburo Hibino, Kazunobu Katoh, Masatoshi Sugiyama | 1980-03-04 |