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Fumitaka Tsuji
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Zama, JP
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last 30 patents
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Patent Grant
Optical disc having land pre-pits and variable groove depths
Patent number
6,819,650
Issue date
Nov 16, 2004
Victor Company of Japan, Ltd.
Takayuki Deno
G11 - INFORMATION STORAGE
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Patent Grant
Optical recording medium and recording method therefor
Patent number
6,507,557
Issue date
Jan 14, 2003
Victor Company of Japan, Ltd.
Hirotoshi Ohno
G11 - INFORMATION STORAGE