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Patent applications and USPTO patent grants for Yokochi; Yoshinari.The latest application filed is for "optical pickup device and optical recording medium driving apparatus".
Patent | Date |
---|---|
Optical pickup device and optical recording medium driving apparatus Grant 7,239,596 - Saitoh , et al. July 3, 2 | 2007-07-03 |
Optical pickup device and optical recording medium driving apparatus App 20040233821 - Saitoh, Ryo ;   et al. | 2004-11-25 |
System of issuing card and system of certifying the card Grant 6,527,173 - Narusawa , et al. March 4, 2 | 2003-03-04 |
Optical recording medium and apparatus of judging fake thereof Grant 6,252,685 - Yokochi June 26, 2 | 2001-06-26 |
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