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Inventor

Tomomi Okamoto

Inventor
Chigasaki, JP

Overview

37→
Patents
1992–2018
Patent span
Physics
Primary field (CPC G)

Patents· 37 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 transducer45%
H01LSemiconductor devices10%
H10KOrganic electric solid-state devices7%
C09KMaterials for miscellaneous applications, not provided for elsewhere5%
C07DHeterocyclic compounds3%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds3%
H05KPrinted circuits3%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h103%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests3%
C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium2%
PatentTitleYear
9,899,606'Composition for organic electroluminescent element, organic electroluminescent element, display and lighting'20189,564,602'Organic compound, charge-transporting material, composition containing the compound, organic electroluminescent element, display device, and lighting device'20179,349,416'Optical disk apparatus and disk magazine'20169,349,961'Organic electroluminescent element material, organic electroluminescent element composition, organic electroluminescent element, display device, and lighting device'20169,247,674'Heat sink and electronic apparatus provided with heat sink'20168,974,116'Heat sink for measuring temperature of electronic component'20158,945,728'Organic compound, charge-transporting material, composition containing the compound, organic electroluminescent element, display device, and lighting device'20158,908,484'Recording/reproducing device and optical disk library device'20148,043,103'Electronic component connecting apparatus, electronic unit and electronic apparatus'20117,940,612'Optical disc apparatus and control method thereof'20117,123,481'Electronic device'20066,948,179'Disk cartridge'2005D0504689'Disc cartridge'20056,847,605'Disk cartridge'20056,779,194'Disc cartridge for one-sided disc-shaped recordable medium'20046,711,119'Disk cartridge with a holder having disk information on it'20046,665,261'Disk cartridge'20036,625,108'Disk cartridge'20036,577,593'Disk cartridge'20036,519,220'Disk device with eliminatable gaps'20036,510,132'Disk cartridge'20036,507,560'Disc cartridge'20036,480,464'Disk cartridge with holder and disk information'20026,463,030'Disc cartridge'20026,449,242'Disk cartridge'20026,400,678'Disc cartridge'20026,349,087'Disk cartridge with a disk holding member'20026,285,642'Disk device with vibration-insulating mechanism'20016,205,105'Disk cartridge and disk cartridge apparatus'20015,982,719'Disc auto changer for recording or reproducing information on a desired disc of a plurality of discs in a magazine'19995,959,803'Cartridge changer, data storage unit using the changer and apparatus using the data storage unit'19995,862,119'Disc inclining/disc inverting mechanism in a disc storage/playback apparatus'19995,683,627'Curable electroconductive composition'19975,434,735'Recording/playback apparatus for controlling contact between a head and a magnetic tape by controlled spouting of air in the vicinity of the head'19955,243,483'Rotary drum device'19935,220,472'Rotary drum for video tape recorder'19935,130,875'Multichannel magnetic head having a plurality of head chips fixed on a common head base'1992

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1992–2011Patents assigned to HITACHI LTD (26)· patent assignee history
1992–1993Based in Katsuta, JP· patent location history
1995–2005Based in Chigasaki, JP· patent location history
2005–2018Based in Kanagawa, JP· patent location history
2005–2016Based in Yokohama, JP· patent location history
2011–2016Patents assigned to FUJITSU LTD (3)· patent assignee history
2011–2016Patents assigned to HITACHI LG DATA STORAGE INC (3)· patent assignee history
2011–2015Based in Kawasaki, JP· patent location history
2015–2018Patents assigned to MITSUBISHI CHEM CORP (4)· patent assignee history
2015–2016Patents assigned to OKAMOTO TOMOMI (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI LTD261992–2011
MITSUBISHI CHEM CORP42015–2018
FUJITSU LTD32011–2016
HITACHI LG DATA STORAGE INC32011–2016
OKAMOTO TOMOMIself22015–2016
Locations
LocationPatentsSpan
Chigasaki, JP191995–2005
Kanagawa, JP52005–2018
Yokohama, JP52005–2016
Kawasaki, JP22011–2015
Katsuta, JP21992–1993