Inventor

Masahiko Chaya

Inventor

Yokohama, JP

Overview

20→

Patents

1991–2012

Patent span

Physics

Primary field (CPC G)

Patents· 20 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 transducer69%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests8%

B41JTypewriters4%

G02BOptical elements, systems or apparatus4%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein4%

G03BApparatus or arrangements for taking photographs or for projecting or viewing them4%

G06KGraphical data reading4%

H02KDynamo-electric machines4%

PatentTitleYear

8,272,795'Cartridge and printer'2012 6,737,190'Electronic apparatus'2004 5,979,755'Auto-changer'1999 5,872,766'Device for adjusting the preload of a plate spring for an optical pickup apparatus'1999 5,818,666'Linear drive motor apparatus for adjusting the relative position between and second yokes of a pair of magnetic circuits'1998 5,731,929'Disk recording/reproduction apparatus with disk clamp mechanism comprising a caddie holding a first disk and a spindle centering a second disk'1998 5,625,607'Magneto-optical disk apparatus including two magnetic field applying devices, one of which has a substantial ring-shaped core member with a gap in a portion thereof'1997 5,604,719'Magnetooptical information recording/reproducing method and apparatus employing a floating slider supporting a magnetic head'1997 5,594,708'Magnetooptical disc apparatus with magnetic head'1997 5,590,095'Magneto-optical disk apparatus with floating type magnetic head and a device for limiting an amount of deflection of a resilient member supporting the magnetic head'1996 5,485,434'Magneto-optical disk apparatus for recording and/or reproducing information using modulated and constant magnetic field applying devices'1996 5,361,242'External magnetic field application device including a heat dissipation member and a metal plate for dissipating heat'1994 5,305,151'Objective lens driver'1994 5,268,784'Pivotable mirror device for tracking'1993 5,208,793'Optical disk apparatus including a braking device for frictionally suppressing movement of an optical head carriage'1993 5,161,146'Disc cleaning device'1992 5,157,650'Optical recording apparatus'1992 5,138,603'System and method for processing optical information with tracking error compensated'1992 5,128,919'Apparatus for reproducing an optically recorded information'1992 5,046,061'Optical light beam scanner with zero order beam reflector'1991

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991–1992Patents assigned to SONY CORP (4)· patent assignee history

1991–2004Based in Kanagawa, JP· patent location history

1992–2012Patents assigned to CANON KK (16)· patent assignee history

1992–2012Based in Yokohama, JP· patent location history

2012Patents assigned to CHAYA MASAHIKO (1)· patent assignee history

2012Patents assigned to ITO KENJI (1)· patent assignee history

2012Patents assigned to SUZUKI ETSURO (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
CANON KK	16	1992–2012
SONY CORP	4	1991–1992
CHAYA MASAHIKOself	1	2012
ITO KENJI	1	2012
SUZUKI ETSURO	1	2012

Locations

Location	Patents	Span
Yokohama, JP	15	1992–2012
Kanagawa, JP	5	1991–2004