Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5233491 | Disc drive with snap-fit seal | Akira Kadonaga | 1993-08-03 |
| 5191568 | Disc drive apparatus with tracking control based on multiple reference tracks and with automatic seek time adjustment | Takayasu Muto, Junkichi Sugita, Masami Kashiwagi, Toru Tanaka, Hidekazu Seto | 1993-03-02 |
| 5179482 | Disk drive with optical encoder having integral scale member | Tooru Tanaka, Keiichi Ohta | 1993-01-12 |
| 4272653 | Loudspeaker and a method of producing the same | Hiroshi Koizumi | 1981-06-09 |