Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7452435 | Functional film | Tadayoshi Iijima, Chieko Yamada, Shigeyo Miyamori | 2008-11-18 |
| 6617018 | Functional film | Tadayoshi Iijima, Chieko Yamada, Shigeyo Miyamori | 2003-09-09 |
| 6605341 | Functional film having specific surface dispersion ratio | Tadayoshi Iijima, Hiroshi Kawahara, Yasufumi Takasugi | 2003-08-12 |
| 5618637 | Magnetic recording medium | Takashi Handa | 1997-04-08 |
| 5580399 | Magnetic recording medium | Yoichi Yoshimura | 1996-12-03 |
| 5514463 | Magnetic recording medium | Kiyotaka Okuyama, Shigeo Kurose | 1996-05-07 |
| 5514465 | Magnetic recording medium comprising a magnetic layer containing magnetic powder, an organic dye and a binder having an amino group or ammonium salt group | Takashi Handa | 1996-05-07 |
| 5506064 | Magnetic recording medium | Takashi Handa | 1996-04-09 |
| 5225281 | Magnetic recording medium comprising a magnetic coating containing magnetic powder obtained from a process of coating iron oxide powder with silicon, zirconium and aluminum compounds and reducing | Shigeo Kurose, Kiyotaka Okuyama | 1993-07-06 |
| 5151115 | Magnetic powder for magnetic recording media and method for producing same | — | 1992-09-29 |
| 4623405 | Metallic magnetic powder | — | 1986-11-18 |
| 4394420 | Magnetic recording medium | Masashi Hayama | 1983-07-19 |
| 4388369 | Magnetic recording medium | Masashi Hayama | 1983-06-14 |
| 4379803 | Magnetic recording medium | Masashi Hayama | 1983-04-12 |