Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5097456 | Optical head | Yasuo Shimizu, Minoru Ohtsuka, Masahiro Takahashi, Shizuo Nagata | 1992-03-17 |
| 4890230 | Electronic dictionary | Hikoshi Nagasawa | 1989-12-26 |
| 4813007 | External magnetic field generating device | Yasuhiro Suzuki, Shizuo Nagata, Yasuo Shimizu | 1989-03-14 |
| 4799271 | Optical character reader apparatus | Hikoshi Nagasawa, Kazuo Ito, Shigeru Horii | 1989-01-17 |
| 4748524 | Alignment disk for use in adjusting or inspecting a magnetic head in a floppy disk drive unit | Noburo Fukaya, Masatoshi Hisada | 1988-05-31 |