Inventor

Nobuhide Matsubayashi

Inventor

Hachioji, JP

Overview

1986–2001

Patent span

Physics

Primary field (CPC G)

Patents· 13 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G11Bprimary

G11BInformation storage based on relative movement between record carrier and transducer92%

H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light8%

PatentTitleYear

6,169,714'Apparatus and method for recording/reproducing magneto-optical information'2001 5,598,389'Signal detector for an optical information reproducing apparatus'1997 5,515,353'Optical head with forward and return light beam propagating along a common path'1996 5,404,490'Photomagnetic signal detecting device'1995 5,249,171'Opto-magnetic pick-up device including phase difference correcting means'1993 5,132,953'Multi-beam optical recording/reproducing apparatus for recording/reproducing on a medium having a recording flat part with a guide groove on each side'1992 5,124,868'Magneto-optic player with improved C/N ratio'1992 5,099,470'Apparatus for reproducing information from opto-magnetic record medium'1992 4,721,850'Optical pickup device having a detector for detecting the light emitting intensity variation of a semiconductor light emitting element'1988 4,682,311'Photomagnetic differential reproducing system'1987 D0288558'Optical pickup for use in optical discs'1987 4,631,712'Optical disk apparatus with beam energy correction for deviations in inclination'1986 4,607,359'Optical recording/reproducing apparatus'1986

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1986–2001Patents assigned to OLYMPUS OPTICAL CO (13)· patent assignee history

1986Based in Tokyo, JP· patent location history

1987–2001Based in Hachioji, JP· patent location history

2001Patents assigned to FUJITSU LTD (1)· patent assignee history

2001Patents assigned to HITACHI LTD (1)· patent assignee history

2001Patents assigned to HITACHI MAXELL (1)· patent assignee history

2001Patents assigned to SANYO ELECTRIC CO (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
OLYMPUS OPTICAL CO	13	1986–2001
FUJITSU LTD	1	2001
HITACHI LTD	1	2001
HITACHI MAXELL	1	2001
SANYO ELECTRIC CO	1	2001

Locations

Location	Patents	Span
Hachioji, JP	11	1987–2001
Tokyo, JP	2	1986