Yoshihito Maeda

Person

Mito, 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
Reflective-type display device having a refractive index ratio betw...
- Patent number 5,828,431
- Issue date Oct 27, 1998
- Hitachi, Ltd.
- Masahiko Ando
- G02 - OPTICS
Information Patent Grant
Optical beam scanning system with rotating beam compensation
- Patent number 5,668,590
- Issue date Sep 16, 1997
- Hitachi, Ltd.
- Seiji Maruo
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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
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
Information recording medium
- Patent number 4,651,172
- Issue date Mar 17, 1987
- Hitachi, Ltd.
- Ryuji Watanabe
- G11 - INFORMATION STORAGE

Yoshihito Maeda

Person

Patents Grantslast 30 patents

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

Reflective-type display device having a refractive index ratio betw...

Optical beam scanning system with rotating beam compensation

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

Information processor and disk memory used in the same

Optical recording medium

Information recording medium