Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5388016 | Magnetic tape data management method and apparatus | Sadasaburoh Kanai, Hiroyuki Kitajima, Toshifumi Nishimura, Minoru Kosuge | 1995-02-07 |
| 5235641 | File encryption method and file cryptographic system | Masafumi Nozawa, Akinobu Shimada, Toshifumi Nishimura, Tokuhiro Tsukiyama, Kiyoshi Yata +4 more | 1993-08-10 |
| 5163134 | Method and apparatus for controlling data writing in magnetic recording subsystem | Kenichi Kageura, Takashi Doi | 1992-11-10 |
| 4663752 | Sector mark signal control circuit for disc apparatus | Tokuhiro Tsukiyama | 1987-05-05 |
| 4586027 | Method and system for data compression and restoration | Tokuhiro Tsukiyama, Yoshie Kondo, Shinpei Saba, Syoji Ozaki, Kunihiro Itoh | 1986-04-29 |