Hisashi Andoh

Person

Ibaraki, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical recording media and information recording and reproducing u...
- Patent number RE36624
- Issue date Mar 21, 2000
- Hitachi, Ltd.
- Yoshihito Maeda
- 430 - Radiation imagery chemistry: process, composition, or product thereof
Information Patent Grant
ROM type optical recording medium with a high reflectivity and an o...
- Patent number 5,583,840
- Issue date Dec 10, 1996
- Hitachi, Ltd.
- Hiroyuki Minemura
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Optical disk apparatus
- Patent number 5,572,502
- Issue date Nov 5, 1996
- Hitachi, Ltd.
- Atsuko Naruse
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical recording media and information recording and reproducing u...
- Patent number 5,484,686
- Issue date Jan 16, 1996
- Hitachi, Ltd.
- Yoshihito Maeda
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical disk memory and information processing apparatus
- Patent number 5,475,656
- Issue date Dec 12, 1995
- Hitachi, Ltd.
- Yoshio Sato
- G11 - INFORMATION STORAGE
Information Patent Grant
Methods of varying optical properties, optical devices, information...
- Patent number 5,420,845
- Issue date May 30, 1995
- Hitachi, Ltd.
- Yoshihito Maeda
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical memory and information processing apparatus
- Patent number 5,371,730
- Issue date Dec 6, 1994
- Hitachi, Ltd.
- Yoshihito Maeda
- G11 - INFORMATION STORAGE
Information Patent Grant
Information processing apparatus and optical head incorporated therein
- Patent number 5,317,556
- Issue date May 31, 1994
- Hitachi, Ltd.
- Nobuyoshi Tsuboi
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical disk apparatus and optical head
- Patent number 5,311,494
- Issue date May 10, 1994
- Hitachi, Ltd.
- Tatsuya Sugita
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Information processor and disk memory used in the same
- Patent number 5,274,612
- Issue date Dec 28, 1993
- Hitachi, Ltd.
- Yoshio Sato
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical recording medium
- Patent number 5,187,052
- Issue date Feb 16, 1993
- Hitachi, Ltd.
- Yoshihito Maeda
- G11 - INFORMATION STORAGE
Information Patent Grant
Thermal printing head
- Patent number 4,907,015
- Issue date Mar 6, 1990
- Hitachi, Ltd.
- Toshiki Kaneko
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Method for making vacuum circuit breaker electrodes
- Patent number 4,836,978
- Issue date Jun 6, 1989
- Hitachi, Ltd.
- Ryuji Watanabe
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Information recording and reproducing apparatus having recording me...
- Patent number 4,773,059
- Issue date Sep 20, 1988
- Hitachi, Ltd.
- Tetsuro Minemura
- G11 - INFORMATION STORAGE

Hisashi Andoh

Person

Patents Grantslast 30 patents

Optical recording media and information recording and reproducing u...

ROM type optical recording medium with a high reflectivity and an o...

Optical disk apparatus

Optical recording media and information recording and reproducing u...

Optical disk memory and information processing apparatus

Methods of varying optical properties, optical devices, information...

Optical memory and information processing apparatus

Information processing apparatus and optical head incorporated therein

Optical disk apparatus and optical head

Information processor and disk memory used in the same

Optical recording medium

Thermal printing head

Method for making vacuum circuit breaker electrodes

Information recording and reproducing apparatus having recording me...