Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6738877 | Access control method, storage apparatus and storage medium | Teruji Yamakawa | 2004-05-18 |
| 6687194 | Optical storing apparatus and reproducing method for correcting read errors | Shinya Kobayashi, Shigenori Yanagi, Teruji Yamakawa | 2004-02-03 |
| 6618796 | Data storage device and control method therefor | Teruji Yamakawa | 2003-09-09 |
| 6604153 | Access protection from unauthorized use of memory medium with storage of identifier unique to memory medium in data storage device | Teruji Yamakawa | 2003-08-05 |
| 6453369 | Access protection from unauthorized use of memory medium using identifier unique to data storage device | Teruji Yamakawa | 2002-09-17 |
| 6345385 | Storage unit, storage medium and identification information recording method | Teruji Yamakawa | 2002-02-05 |
| 6209057 | Storage device having data buffer | Akira Ban | 2001-03-27 |
| 6131137 | Drive control unit and optical memory apparatus | Teruji Yamakawa, Masaoki Ohtsuka | 2000-10-10 |