Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8603652 | Magnetic recording medium | Katsumi Araki, Kenichi Nakamura | 2013-12-10 |
| 7527881 | Cleaning medium | — | 2009-05-05 |
| 7086623 | Leader tape and magnetic tape cartridge | Masami Sato, Satoru Hayakawa | 2006-08-08 |
| 6916521 | Cleaning medium for magnetic recording apparatus | Yutaka Kakuishi, Satoru Hayakawa, Minoru Sueki | 2005-07-12 |
| 6443827 | Polishing member and process for producing the same | Katsumi Ryoke | 2002-09-03 |
| 6012969 | Abrasive member for very high return loss optical connector ferrules | Katsumi Ryoke, Masaaki Fujiyama | 2000-01-11 |
| 5639284 | Abrasive member | Katsumi Ryoke, Masaaki Fujiyama | 1997-06-17 |
| 5479311 | Magnetic tape cassette having improved magnetic tape substrate and tape guide for reducing electrostatic charging | Hiroaki Doushita, Yasutoshi Okuzawa, Takeshi Kakuta, Kazuo Kato | 1995-12-26 |
| 5415933 | Magnetic recording medium containing a biaxially oriented multilayer support | Takeshi Kakuta, Kazuo Kato, Noburo Hibino | 1995-05-16 |
| 4946534 | Process for the preparation of magnetic recording disk | Kunihiko Honda, Masaaki Fujiyama | 1990-08-07 |
| 4379809 | Magnetic recording medium | Akihiro Matsufuji, Nobuo Tsuji | 1983-04-12 |