Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4430729 | Series resonant drive circuit for magnetic bubble memory | Takashi Toyooka, Mamoru Sugie, Shigeru Yoshizawa | 1984-02-07 |
| 4379341 | Series resonance drive circuit for magnetic bubble memory | Takashi Toyooka, Mamoru Sugie, Shigeru Yoshizawa | 1983-04-05 |
| 4247911 | Drive circuit for magnetic bubble device | Shigeru Yoshizawa, Shinsaku Chiba, Koichi Mayama, Takashi Toyooka, Nobuo Saito | 1981-01-27 |