Shozi Yoshikawa

Person

Hachioji, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical information recording reproducing memory system with both p...
- Patent number 4,858,219
- Issue date Aug 15, 1989
- Olympus Optical Company Limited
- Shozi Yoshikawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Bias-magnetic-field generating apparatus in magneto-optical informa...
- Patent number 4,748,605
- Issue date May 31, 1988
- Olympus Optical Company Limited
- Mitsugu Sakai
- G11 - INFORMATION STORAGE
Information Patent Grant
Stabilized laser device
- Patent number 4,745,609
- Issue date May 17, 1988
- Olympus Optical Co., Ltd.
- Shozi Yoshikawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Tracking control apparatus
- Patent number 4,745,588
- Issue date May 17, 1988
- Olympus Optical Co., Ltd.
- Shozi Yoshikawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Semiconductor laser drive device with an abnormal voltage protectio...
- Patent number 4,745,610
- Issue date May 17, 1988
- Olympus Optical Co., Ltd.
- Shozi Yoshikawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Stabilized laser apparatus
- Patent number 4,734,914
- Issue date Mar 29, 1988
- Olympus Optical Co., Ltd.
- Shozi Yoshikawa
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Light source degeradation detecting apparatus for laser device
- Patent number 4,728,188
- Issue date Mar 1, 1988
- Olympus Optical Co., Ltd.
- Seizi Kitagawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Stabilized laser device of optical information recording/reproducti...
- Patent number 4,718,068
- Issue date Jan 5, 1988
- Olympus Optical Co., Ltd.
- Shozi Yoshikawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Semiconductor laser driver
- Patent number 4,713,819
- Issue date Dec 15, 1987
- Olympus Optical Co., Ltd.
- Shozi Yoshikawa
- G01 - MEASURING TESTING
Information Patent Grant
Apparatus for detecting input signal
- Patent number 4,520,280
- Issue date May 28, 1985
- Olympus Optical Company Limited
- Shozi Yoshikawa
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Method for reading information or defect out of rotating disc
- Patent number 4,499,572
- Issue date Feb 12, 1985
- Olympus Optical Co., Ltd.
- Shozi Yoshikawa
- G11 - INFORMATION STORAGE

Shozi Yoshikawa

Person

Patents Grantslast 30 patents

Optical information recording reproducing memory system with both p...

Bias-magnetic-field generating apparatus in magneto-optical informa...

Stabilized laser device

Tracking control apparatus

Semiconductor laser drive device with an abnormal voltage protectio...

Stabilized laser apparatus

Light source degeradation detecting apparatus for laser device

Stabilized laser device of optical information recording/reproducti...

Semiconductor laser driver

Apparatus for detecting input signal

Method for reading information or defect out of rotating disc