Hiroshi Shirai

Person

Ibaraki-shi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical recording and reproducing apparatus capable of identifying...
- Patent number 8,009,547
- Issue date Aug 30, 2011
- Hitachi Maxell, Ltd.
- Reiji Tamura
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical disk with a plurality of radially extending marks for recor...
- Patent number 7,505,392
- Issue date Mar 17, 2009
- Hitachi Maxell, Ltd.
- Reiji Tamura
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical information recording medium and method of recording and re...
- Patent number 7,033,659
- Issue date Apr 25, 2006
- Hitachi Maxell, Ltd.
- Hiroshi Shirai
- G11 - INFORMATION STORAGE
Information Patent Grant
Magneto-optical recording medium including a calibration magnetic d...
- Patent number 6,847,590
- Issue date Jan 25, 2005
- Sanyo Electric Co., Ltd.
- Atsushi Yamaguchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Magneto-optical recording media having an auxiliary magnetic layer
- Patent number 6,424,601
- Issue date Jul 23, 2002
- Hitachi Maxell, Ltd.
- Satoru Oonuki
- G11 - INFORMATION STORAGE
Information Patent Grant
Magneto-optical recording medium and recording/reproducing apparatu...
- Patent number 6,301,199
- Issue date Oct 9, 2001
- Sanyo Electric Co., Ltd.
- Atsushi Yamaguchi
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
Optical disk, method for producing the same, and recording and repr...
- Publication number 20090141604
- Publication date Jun 4, 2009
- HITACHI MAXELL., LTD.
- Reiji Tamura
- G11 - INFORMATION STORAGE
Information Patent Application
Information-recording medium
- Publication number 20080260985
- Publication date Oct 23, 2008
- Hitachi Maxell, Ltd.
- Hiroshi Shirai
- G11 - INFORMATION STORAGE
Information Patent Application
Information-recording medium
- Publication number 20070037093
- Publication date Feb 15, 2007
- Hitachi Maxell, Ltd.
- Makoto Miyamoto
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
Optical disk, recording and reproducing apparatus for the same, and...
- Publication number 20050169159
- Publication date Aug 4, 2005
- Hitachi Maxell, Ltd.
- Reiji Tamura
- G11 - INFORMATION STORAGE
Information Patent Application
Optical disk, method for producing the same, and recording and repr...
- Publication number 20050105459
- Publication date May 19, 2005
- Hitachi Maxell, Ltd.
- Reiji Tamura
- G11 - INFORMATION STORAGE
Information Patent Application
Optical information recording medium and method of recording and re...
- Publication number 20040126623
- Publication date Jul 1, 2004
- Hiroshi Shirai
- G11 - INFORMATION STORAGE
Information Patent Application
Information-recording medium
- Publication number 20040106065
- Publication date Jun 3, 2004
- Hitachi Maxell, Ltd.
- Makoto Miyamoto
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
Magneto-optical recording medium having different magnetic domain r...
- Publication number 20030107956
- Publication date Jun 12, 2003
- Hitachi Maxwell, Ltd.
- Hiroyuki Awano
- G11 - INFORMATION STORAGE
Information Patent Application
Magneto-optical recording medium having different magnetic domain r...
- Publication number 20020018404
- Publication date Feb 14, 2002
- HITACHI MAXELL, LTD.
- Hiroyuki Awano
- G11 - INFORMATION STORAGE
Information Patent Application
Magneto-optical recording medium and recording/reproducing apparatu...
- Publication number 20010050885
- Publication date Dec 13, 2001
- SANYO ELECTRIC CO., LTD.
- Atsushi Yamaguchi
- G11 - INFORMATION STORAGE

Hiroshi Shirai

Person

Patents Grantslast 30 patents

Optical recording and reproducing apparatus capable of identifying...

Optical disk with a plurality of radially extending marks for recor...

Optical information recording medium and method of recording and re...

Magneto-optical recording medium including a calibration magnetic d...

Magneto-optical recording media having an auxiliary magnetic layer

Magneto-optical recording medium and recording/reproducing apparatu...

Patents Applicationslast 30 patents

Optical disk, method for producing the same, and recording and repr...

Information-recording medium

Information-recording medium

Optical disk, recording and reproducing apparatus for the same, and...

Optical disk, method for producing the same, and recording and repr...

Optical information recording medium and method of recording and re...

Information-recording medium

Magneto-optical recording medium having different magnetic domain r...

Magneto-optical recording medium having different magnetic domain r...

Magneto-optical recording medium and recording/reproducing apparatu...