Utsumi; Masamichi
Patent Applications and Registrations
Patent applications and USPTO patent grants for Utsumi; Masamichi.The latest application filed is for "optical pickup for discriminating between and reading different types of optical discs".
- Utsumi; Masamichi - Chiba JP
| Patent | Date |
|---|---|
| Optical pickup for discriminating between and reading different types of optical discs Grant 6,366,543 - Uemura , et al. April 2, 2 | 2002-04-02 |
| Optical pickup for discriminating between and reading different types of optical discs App 20010019520 - Uemura, Kamon ; et al. | 2001-09-06 |
| Optical pickup for discriminating between and reading different types of optical discs Grant 6,222,803 - Uemura , et al. April 24, 2 | 2001-04-24 |
| Method and apparatus for playing back multilayer disk Grant 5,682,372 - Yamakawa , et al. October 28, 1 | 1997-10-28 |
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