Issued Patents All Time
Showing 26–35 of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5389418 | Flexible magnetic recording disk and method for preparing the same | Masataka Ota, Yasushi Endo, Toshio Kawamata | 1995-02-14 |
| 5384175 | Magnetic recording disc comprising a non-magnetic underlayer and a magnetic layer comprising ferromagnetic particles and a binder | Masaya Kojima, Kazuhiro Niitsuma, Toshio Kawamata, Yasushi Endo | 1995-01-24 |
| 5370917 | Magnetic recording disc comprising magnetic powder and a binder in a container which includes a nonwoven fabric liner comprising polypropylene and rayon fibers | Kazuhiro Niitsuma, Toshio Kawamata | 1994-12-06 |
| 5358777 | Magnetic recording medium comprising an underlayer of non magnetic powder and binder resin and a magnetic layer with a specified Young's modulus | Masaya Kojima, Toshio Kawamata | 1994-10-25 |
| 5300314 | Process for preparing a magnetic recording medium | Kazuhiro Niitsuma, Toshio Kawamata | 1994-04-05 |
| 5179487 | Magnetic recording disk loaded in a cartridge with a specified liner | Kazuhiro Niitsuma | 1993-01-12 |
| 5104751 | Magnetic recording medium lubricant comprising a phthalic acid diester and fatty acid ester | Takao Ohya | 1992-04-14 |
| 5091270 | Magnetic recording medium lubricated by a mixture of methyl branched iso ester compounds synthesized by the oko process | Takao Ohya, Yasuo Nishikawa | 1992-02-25 |
| 5061564 | Magnetic recording medium comprising a polar group containing resin or compound and a methyl iso ester lubricant prepared from a methyl iso acid or methyl iso alcohol or both | Takao Ohya, Jun Nakagawa, Yasuo Nishikawa, Tsutomu Okita, Hiroshi Hashimoto | 1991-10-29 |
| 4851027 | Gradually effective, coated fertilizer | Toshikazu Murayama, Shuji Takesue, Yorozu Yokomori | 1989-07-25 |