Issued Patents All Time
Showing 26–46 of 46 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4626469 | Magnetic recording material | Kenichi Masuyama, Shinobu Iida, Masaaki Fujiyama | 1986-12-02 |
| 4619855 | Magnetic recording medium with electron beam cured magnetic layer | Tsutomu Okita, Hiroshi Hashimoto | 1986-10-28 |
| 4617226 | Magnetic recording medium | Masahiro Utumi, Masaaki Fujiyama, Takahito Miyoshi | 1986-10-14 |
| 4601946 | Magnetic recording medium | Shinobu Iida, Fumiaki Tsukuda, Masaaki Fujiyama, Eiichi Tadokoro | 1986-07-22 |
| 4579778 | Magnetic recording medium | Norio Nasu, Eiichi Tadokoro, Masaaki Fujiyama | 1986-04-01 |
| 4551386 | Magnetic recording materials | Shinobu Iida, Masahiro Utsumi, Toshimitu Okutu, Kenichi Masuyama, Eiichi Tadokoro | 1985-11-05 |
| 4546038 | Magnetic recording medium | Masaaki Fujiyama, Katsumi Ryoke, Eiichi Tadokoro | 1985-10-08 |
| 4544601 | Magnetic recording medium | Shinobu Iida, Toshimitu Okutu, Takahito Miyoshi, Eiichi Tadokoro, Masaaki Fujiyama | 1985-10-01 |
| 4499121 | Method of preparing a magnetic recording medium with a calendering treatment | Masaaki Fujiyama, Sugihiko Tada, Eiichi Tadokoro, Katsumi Ryoke, Masahiro Utsumi +1 more | 1985-02-12 |
| 4497864 | Magnetic recording medium | Katsumi Ryoke, Takashi Yoneyama, Eiichi Tadokoro | 1985-02-05 |
| 4474848 | Magnetic recording medium | Masaaki Fujiyama | 1984-10-02 |
| 4448842 | Magnetic recording medium | Nobuo Tsuji, Masaaki Fujiyama | 1984-05-15 |
| 4444842 | Magnetic recording medium | Nobuo Tsuji, Yasutoshi Okuzawa, Norio Nasu, Masaaki Fujiyama | 1984-04-24 |
| 4427738 | Magnetic recording medium | Masaaki Fujiyama | 1984-01-24 |
| 4425400 | Magnetic recording medium | Masaaki Fujiyana, Nobuo Tsuji, Norio Nasu | 1984-01-10 |
| 4420532 | Magnetic recording medium | Masaaki Fujiyama, Norio Nasu | 1983-12-13 |
| 4411966 | Magnetic recording medium | Nobuo Tsuji, Yasutoshi Okuzawa, Norio Nasu, Masaaki Fujiyama | 1983-10-25 |
| 4356232 | Method for producing magnetic recording medium | Eiichi Tadokoro, Haruo Masuda, Masaaki Fujiyama | 1982-10-26 |
| 4273797 | Method of detecting pinholes in a magnetic recording medium | Goro Akashi, Yasuyuki Yamada, Masaaki Fujiyama | 1981-06-16 |
| 4202927 | Magnetic recording medium | Satoru Takayama, Masaki Fujiyama | 1980-05-13 |
| 4187345 | Magnetic recording medium | Masaaki Fujiyama, Satoru Takayama | 1980-02-05 |