Hirota; Ryoichi
Patent Applications and Registrations
Patent applications and USPTO patent grants for Hirota; Ryoichi.The latest application filed is for "phase change optical information recording medium including means for preventing movement of the recorded portion".
- Hirota; Ryoichi - Saitama JP
- Hirota; Ryoichi - Yokohama JA
| Patent | Date |
|---|---|
| Phase change optical information recording medium including means for preventing movement of the recorded portion Grant 5,179,547 - Komaki , et al. January 12, 1 | 1993-01-12 |
| Vertical convergence circuit Grant 3,895,252 - Funakawa , et al. July 15, 1 | 1975-07-15 |
| High Voltage Regulation Circuit For A Color Television Receiver Grant 3,609,447 - Hirota , et al. September 28, 1 | 1971-09-28 |
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