Yamaoka Hideyoshi

Person

Matsubara, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical disk and optical recording/reproducing device
- Patent number 7,974,158
- Issue date Jul 5, 2011
- Sharp Kabushiki Kaisha
- Takahashi Akira
- G11 - INFORMATION STORAGE
Information Patent Grant
Magneto-optic memory device
- Patent number 5,738,765
- Issue date Apr 14, 1998
- Sharp Kabushiki Kaisha
- Kenji Ohta
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Magneto-optic memory device
- Patent number 5,714,251
- Issue date Feb 3, 1998
- Sharp Kabushiki Kaisha
- Kenji Ohta
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Optical retrieval system for encoding pit angular data and optical...
- Patent number 5,331,623
- Issue date Jul 19, 1994
- Sharp Kabushiki Kaisha
- Hirotsugu Matoba
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical recording element having a plurality of thin film filtering...
- Patent number 5,214,636
- Issue date May 25, 1993
- Sharp Kabushiki Kaisha
- Toshio Ishikawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical retrieval system for encoding pit angular data and optical...
- Patent number 5,200,941
- Issue date Apr 6, 1993
- Sharp Kabushiki Kaisha
- Hirotsugu Matoba
- G11 - INFORMATION STORAGE
Information Patent Grant
Process for preparing blazed holograms
- Patent number 5,013,494
- Issue date May 7, 1991
- Sharp Kabushiki Kaisha
- Katsuhiro Kubo
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Object lens driving device
- Patent number 4,988,165
- Issue date Jan 29, 1991
- Sharp Kabushiki Kaisha
- Mitsuo Ishii
- G11 - INFORMATION STORAGE
Information Patent Grant
Thin-film magnetic head
- Patent number 4,739,431
- Issue date Apr 19, 1988
- Sharp Kabushiki Kaisha
- Syuhei Yasuda
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical system in a magneto-optical memory device
- Patent number 4,721,368
- Issue date Jan 26, 1988
- Sharp Kabushiki Kaisha
- Toshihisa Deguchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical focus position control in optical disc apparatus
- Patent number 4,660,190
- Issue date Apr 21, 1987
- Sharp Kabushiki Kaisha
- Yoshikazu Fujii
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical memory disc
- Patent number 4,658,393
- Issue date Apr 14, 1987
- Sharp Kabushiki Kaisha
- Kenji Ohta
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical focus position control in an optical memory system
- Patent number 4,658,390
- Issue date Apr 14, 1987
- Sharp Kabushiki Kaisha
- Yosikazu Fujii
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical memory disc
- Patent number 4,634,617
- Issue date Jan 6, 1987
- Sharp Kabushiki Kaisha
- Kenji Ohta
- G11 - INFORMATION STORAGE
Information Patent Grant
Magneto-optic memory element
- Patent number 4,610,912
- Issue date Sep 9, 1986
- Sharp Kabushiki Kaisha
- Akira Takahashi
- G11 - INFORMATION STORAGE
Information Patent Grant
Magneto-optical head assembly with improved detection means
- Patent number 4,573,149
- Issue date Feb 25, 1986
- Sharp Kabushiki Kaisha
- Toshihisa Deguchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Method for manufacturing an optical memory element
- Patent number 4,544,443
- Issue date Oct 1, 1985
- Shap Kabushiki Kaisha
- Kenji Ohta
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL DISK AND OPTICAL RECORDING/REPRODUCING DEVICE
- Publication number 20110096644
- Publication date Apr 28, 2011
- Akira Takahashi
- G11 - INFORMATION STORAGE

Yamaoka Hideyoshi

Person

Patents Grantslast 30 patents

Optical disk and optical recording/reproducing device

Magneto-optic memory device

Magneto-optic memory device

Optical retrieval system for encoding pit angular data and optical...

Optical recording element having a plurality of thin film filtering...

Optical retrieval system for encoding pit angular data and optical...

Process for preparing blazed holograms

Object lens driving device

Thin-film magnetic head

Optical system in a magneto-optical memory device

Optical focus position control in optical disc apparatus

Optical memory disc

Optical focus position control in an optical memory system

Optical memory disc

Magneto-optic memory element

Magneto-optical head assembly with improved detection means

Method for manufacturing an optical memory element

Patents Applicationslast 30 patents

OPTICAL DISK AND OPTICAL RECORDING/REPRODUCING DEVICE