Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5274510 | Track address pattern for a disk memory apparatus | Junkichi Sugita | 1993-12-28 |
| 5191568 | Disc drive apparatus with tracking control based on multiple reference tracks and with automatic seek time adjustment | Takayasu Muto, Mamoru Osato, Junkichi Sugita, Toru Tanaka, Hidekazu Seto | 1993-03-02 |