Issued Patents All Time
Showing 26–37 of 37 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6128166 | Magnetic head for increasing track density of a magnetic disk | Yoichiro Tanaka, Norio Nakamura, Kazunori Moriya, Yuji Kubota | 2000-10-03 |
| 5981054 | Magnetic recording medium and method for manufacturing the same | Tsutomu Tanaka, Yoichiro Tanaka, Katsutaro Ichihara, Keiichiro Yusu, Akira Kikitsu | 1999-11-09 |
| 5942342 | Perpendicular recording medium and magnetic recording apparatus | Yoichiro Tanaka, Junichi Akiyama | 1999-08-24 |
| 5909341 | Hard disk drive | Tsutomu Tanaka, Kazushi Tanimoto | 1999-06-01 |
| 5830569 | Magnetic recording medium containing CoPtO-based alloy magnetic film | Tsutomu Tanaka | 1998-11-03 |
| 5825596 | Hard disk drive | Tsutomu Tanaka, Kazushi Tanimoto | 1998-10-20 |
| 5792564 | Perpendicular recording medium and magnetic recording apparatus | Yoichiro Tanaka, Junichi Akiyama | 1998-08-11 |
| 5486967 | Magnetic disk memory system | Yoichiro Tanaka, Kazushi Tanimoto, Hiroshi Ohashi, Yasuo Ohtsubo, Shigeru Hoshina | 1996-01-23 |
| 5434014 | Magnetic recording medium and method of manufacturing same | Masayuki Kanamaru, Reiji Nishikawa | 1995-07-18 |
| 4762742 | Perpendicular magnetic recording medium | Tomiya Sonoda, Hiroki Nakamura | 1988-08-09 |
| RE30897 | Electrophotographic copying apparatus with gas evacuating means | Shunji Yamamoto, Koji Imaizumi | 1982-04-06 |
| 4235548 | Electrostatic latent image transfer type copying apparatus | Osamu Miyamoto, Isao Iizaka, Toshio Yamamoto, Shigemitsu Shimizu | 1980-11-25 |