Toshiyasu Tanaka

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Afocal lens, optical head, optical disk apparatus and...

Optical: systems and elements – Lens – Afocal
Reexamination Certificate

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Beam shaping lens, lens part, mounting plate, optical head,...

Optical: systems and elements – Single channel simultaneously to or from plural channels
Reexamination Certificate

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Diffraction element, optical head device including the...

Optical: systems and elements – Diffraction – From grating
Reexamination Certificate

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Information recording medium, information supply system, and...

Dynamic information storage or retrieval – Systems having plural physically distinct independent tracks... – Having layered storage medium
Reexamination Certificate

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Light-reflector type encoding method and the encoder

Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent

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Profile ID: LFUS-PAI-P-702375

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