Issued Patents All Time
Showing 26–40 of 40 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5694576 | Cache control by adding record identification information to partial write request | Akira Yamamoto, Shigeo Homma, Yoshihiro Asaka, Yoshiaki Kuwahara, Akira Kurano +1 more | 1997-12-02 |
| 5613088 | Raid system including first and second read/write heads for each disk drive | Kyosuke Achiwa, Akira Yamamoto, Tetsuhiko Fujii, Takao Satoh | 1997-03-18 |
| 5606684 | On-line dumping system and disk sub-system | Toshio Nakano, Kiyoshi Hisano, Akihito Ogino, Akira Kurano, Hiroyuki Kitajima +1 more | 1997-02-25 |
| 5584008 | External storage unit comprising active and inactive storage wherein data is stored in an active storage if in use and archived to an inactive storage when not accessed in predetermined time by the host processor | Akinobu Shimada, Toshio Nakano | 1996-12-10 |
| 5497472 | Cache control method and apparatus for storing data in a cache memory and for indicating completion of a write request irrespective of whether a record to be accessed exists in an external storage unit | Akira Yamamoto, Shigeo Homma, Yoshihiro Asaka, Yoshiaki Kuwahara, Akira Kurano +1 more | 1996-03-05 |
| 5410666 | On-line dumping system and disk sub system | Toshio Nakano, Kiyoshi Hisano, Akihito Ogino, Akira Kurano, Hiroyuki Kitajima +1 more | 1995-04-25 |
| 5313617 | Multi-disc optical data storage system for use with a host computer for emulating a magnetic disc device | Toshio Nakano | 1994-05-17 |
| 5253351 | Memory controller with a cache memory and control method of cache memory including steps of determining memory access threshold values | Akira Yamamoto, Toshiaki Tsuboi, Shigeo Honma, Hiroyuki Kitajima, Akira Kurano +4 more | 1993-10-12 |
| 5243479 | Mounting structure for information recording and reproducing apparatus | Kazuo Nakagoshi, Akira Chuma, Kazuhisa Shiraishi, Yoshihiro Moribe, Hideo Maekawa | 1993-09-07 |
| 5235641 | File encryption method and file cryptographic system | Akinobu Shimada, Toshifumi Nishimura, Katsuharu Kakuse, Tokuhiro Tsukiyama, Kiyoshi Yata +4 more | 1993-08-10 |
| 5226157 | Backup control method and system in data processing system using identifiers for controlling block data transfer | Toshio Nakano, Akira Kurano, Kiyoshi Hisano, Masayuki Hoshino | 1993-07-06 |
| 5193154 | Buffered peripheral system and method for backing up and retrieving data to and from backup memory device | Hiroyuki Kitajima, Akira Yamamoto, Takashi Doi | 1993-03-09 |
| 5187778 | Buffered disk unit and method of transferring data therein | Akira Yamamoto, Hiroyuki Kitajima, Akira Kurano, Michio Miyazaki, Takikazu Takeuchi | 1993-02-16 |
| 4908793 | Storage apparatus including a semiconductor memory and a disk drive | Hirotsugu Yamagata, Takafumi Oka, Shinichi Kawada | 1990-03-13 |
| 4525839 | Method of controlling storage device | Michio Miyazaki | 1985-06-25 |