Masami Emoto

Person

Yokohama, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical pickup apparatus
- Patent number RE40414
- Issue date Jul 1, 2008
- Ricoh Company, Ltd.
- Yoshitaka Takahashi
- 369 - Dynamic information storage or retrieval
Information Patent Grant
Optical pickup apparatus
- Patent number 5,870,370
- Issue date Feb 9, 1999
- Ricoh Company, Ltd.
- Yoshitaka Takahashi
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup device for detecting tracking error of optical disks...
- Patent number 5,815,473
- Issue date Sep 29, 1998
- Ricoh Company, Ltd.
- Yoshitaka Takahashi
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup apparatus
- Patent number 5,694,385
- Issue date Dec 2, 1997
- Ricoh Comany, Ltd.
- Yoshitaka Takahashi
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical data recording/reproduction apparatus for use with semicond...
- Patent number 5,337,302
- Issue date Aug 9, 1994
- Ricoh Company, Ltd.
- Hiroshi Gotoh
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup device
- Patent number 5,073,888
- Issue date Dec 17, 1991
- Ricoh Company, Ltd.
- Yoshitaka Takahashi
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup device with dual-mode drive mechanism
- Patent number 5,070,494
- Issue date Dec 3, 1991
- Ricoh Company, Ltd.
- Masami Emoto
- G11 - INFORMATION STORAGE
Information Patent Grant
Recording and reproducing optical information device which converts...
- Patent number 5,025,438
- Issue date Jun 18, 1991
- Ricoh Company, Ltd.
- Masami Emoto
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pick-up device for both focus and error tracking detection
- Patent number 4,687,916
- Issue date Aug 18, 1987
- Ricoh Company, Ltd.
- Masami Emoto
- G11 - INFORMATION STORAGE
Information Patent Grant
Focus detection method involving cutting more than half of light be...
- Patent number 4,684,799
- Issue date Aug 4, 1987
- Ricoh Company, Ltd.
- Masami Emoto
- G02 - OPTICS
Information Patent Grant
Optical pickup with a two-detector arrangement
- Patent number 4,683,559
- Issue date Jul 28, 1987
- Ricoh Company, Ltd.
- Masami Emoto
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and device for detecting focal point
- Patent number 4,636,625
- Issue date Jan 13, 1987
- Ricoh Company, Ltd.
- Masami Emoto
- G11 - INFORMATION STORAGE
Information Patent Grant
Exposure process for use in a variable magnification copying machine
- Patent number 4,436,415
- Issue date Mar 13, 1984
- Ricoh Company, Ltd.
- Masami Emoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Masami Emoto

Person

Patents Grantslast 30 patents

Optical pickup apparatus

Optical pickup apparatus

Optical pickup device for detecting tracking error of optical disks...

Optical pickup apparatus

Optical data recording/reproduction apparatus for use with semicond...

Optical pickup device

Optical pickup device with dual-mode drive mechanism

Recording and reproducing optical information device which converts...

Optical pick-up device for both focus and error tracking detection

Focus detection method involving cutting more than half of light be...

Optical pickup with a two-detector arrangement

Method and device for detecting focal point

Exposure process for use in a variable magnification copying machine