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Inventor

Isao Ichimura

Inventor
Tokyo, JP

Overview

62→
Patents
1990–2021
Patent span
Physics
Primary field (CPC G)

Patents· 62 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 transducer41%
B82YSpecific uses or applications of nanostructures13%
G02BOptical elements, systems or apparatus8%
G06VImage or video recognition or understanding7%
H04NPictorial communication, e.g. television6%
G03BApparatus or arrangements for taking photographs or for projecting or viewing them4%
H10FInorganic semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation3%
Y10TTechnical subjects covered by former us classification3%
B01LChemical or physical laboratory apparatus for general use2%
G01NInvestigating or analysing materials by determining their chemical or physical properties2%
PatentTitleYear
10,956,547Biometrics authentication system20219,161,432'Circuit board'20158,466,475'Light detecting chip and light detecting device provided with light detecting chip'20138,463,001'Image pickup apparatus'20138,451,352'Image pickup apparatus'20138,335,353'Biometrics authentication system'20128,324,597'Light detection device'20128,305,429'Image pickup apparatus and image pickup method'20128,306,287'Biometrics authentication system'20128,237,843'Imaging device'20128,180,119'Imaging apparatus and imaging method'20128,170,300'Biometric image pickup apparatus'20128,130,310'Image pickup apparatus'20128,111,595'Optical disk recording and playback apparatus and signal detection method utilizing a differential push-pull method and a phase difference method'20128,106,994'Image pickup apparatus having a microlens array'20127,842,366'Multi-layer optical information recording medium'20107,550,707'Biometrics authentication system with authentication based upon multiple layers'20097,539,108'Optical information reproduction apparatus and optical information reproduction method'20097,394,049'Optical disk apparatus and pickup unit'2008RE040371'Optical disc recording/reproduction apparatus and method'20087,301,875'Information recording device and information recording method'20077,126,899'Optical recording medium processing device and focal point control method thereof'20067,123,551'Optical device with optical recording medium having transparent heat radiating layer'20067,058,000'Information recording disc having an anti-reflection layer and information recording/reproducing apparatus'20067,031,233'Optical recording/reproduction device and focal point control method'20066,987,725'Optical recording medium with high density track pitch and optical disk drive for recording and playback of the same'20066,987,723'Optical recording medium with high density track pitch and optical disk drive for recording and playback of the same'20066,967,050'Optical recording medium and a method of manufacturing the same'20056,934,224'Optical recording medium/system with heat-dissipating and light reflecting layers'20056,882,616'Optical recording medium with high density track pitch and optical disk device for recording and playback of the same'20056,826,133'Optimizing a distance between lenses of a two objective lens for minimizing wavefront aberration and offsetting focus control'20046,683,845'Optical recording medium, method of producing same, and optical recording and reproduction device'20046,683,846'Information recording disc having an anti-reflection layer and information recording/reproducing apparatus'20046,674,696'Focus controlling apparatus and method, and optical disc drive'20046,608,801'Apparatus and method for position control of optical system, and storage and reproduction apparatus'20036,600,714'Optical recording medium, optical pickup and optical recording and/or reproducing apparatus'20036,590,914'Semiconductor laser drive circuit'20036,570,827'OPTICAL ELEMENT FOR CORRECTION OF CHROMATIC ABERRATION, OPTICAL PICK-UP DEVICE HAVING OPTICAL ELEMENT FOR CORRECTION OF CHROMATIC ABERRATION, OPTICAL REPRODUCING DEVICE HAVING OPTICAL PICK-UP DEVICE AND OPTICAL RECORDING AND REPRODUCING DEVICE'20036,552,968'Optical recording medium, method of producing same, and optical recording and reproduction device'20036,414,931'Lens driving device, optical head and optical disc system'20026,404,710'Position controller and position control method of optical system and recording/reproducing apparatus and driving method thereof'20026,324,133'Optical recording and reproducing apparatus and optical recording and reproducing method'20016,307,689'Optical head and drive device for optical recording medium'20016,292,453'Optical disc recording/reproduction apparatus having a lens group, focus, servo, and jog mode adjustment'20016,222,814'Recording/reproducing apparatus and method for phase-change optical disc'20016,115,347'Optical pick-up device, optical recording/reproducing apparatus and objective lens'20006,104,691'Objective lens unit and recording/reproduction apparatus'20006,097,688'Recording/reproducing apparatus and recording/reproducing method for optical recording media'20006,058,095'Objective lens having a doublet lens with high numerical aperture'20006,055,113'Optical pickup and an optical pickup objective lense assembling method'20006,041,031'Optical disc recording/reproduction apparatus and method'20006,005,834'Optical recording medium recording and reproducing apparatus and optical pickup device'19995,841,513'Apparatus for reproducing sound signals recorded on a motion picture film with digital sound track'19985,828,453'Lens designing method and objective lens apparatus with two lenses'19985,786,947'Optical pickup device with a floating element'19985,774,281'Optical pickup device for light collection onto an optical recording medium'19985,764,613'optical pickup apparatus'19985,712,842'Optical pick-up device'19985,625,633'Laser light generating apparatus'19975,550,603'Motion picture film with digital sound track'19965,032,915'Apparatus for detecting positive and negative noise signals in a video signal'19914,977,461'Dropout detecting circuit with one-half wavelength delay'1990

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1990–2021Patents assigned to SONY CORP (61)· patent assignee history
1990–2021Based in Tokyo, JP· patent location history
1991–2008Based in Kanagawa, JP· patent location history
2012–2015Patents assigned to ICHIMURA ISAO (14)· patent assignee history
2012–2013Patents assigned to YAMAMOTO KENJI (9)· patent assignee history
2012–2013Patents assigned to HAYASAKA KENGO (3)· patent assignee history
2012Patents assigned to KAJIHARA JUNJI (3)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SONY CORP611990–2021
ICHIMURA ISAOself142012–2015
YAMAMOTO KENJI92012–2013
HAYASAKA KENGO32012–2013
KAJIHARA JUNJI32012
Locations
LocationPatentsSpan
Tokyo, JP431990–2021
Kanagawa, JP191991–2008