LexDanaLexDanabeta
Inventor

Kohji Takahashi

Inventor
Mobara, JP

Overview

41→
Patents
1988–2021
Patent span
Physics
Primary field (CPC G)

Patents· 41 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 transducer29%
G09GArrangements or circuits for control of indicating devices using static means to present variable information26%
C03CChemical composition of glasses, glazes or vitreous enamels5%
C23CCoating metallic material5%
H10FInorganic semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation5%
G01FMeasuring volume, volume flow, mass flow or liquid level3%
G06FElectric digital data processing3%
H01RElectrically-conductive connections3%
H04NPictorial communication, e.g. television3%
F16CShafts2%
PatentTitleYear
10,885,316Apparatus for authenticating an object and method thereof20218,958,179'Managing resonance frequency of hard disk drive voice coil motor'20158,804,269'Adjusting rotational speed based on ambient temperature in a HDD'20148,526,141'Magnetic disk device and guide member for guiding a flexible wiring board'20138,320,085'Disk drive including a latch configured to lock an actuator in response to an external force'20128,179,641'Disk drive apparatus and head assembly using a resin member to accommodate a wire structure'20128,169,747'Cushioning ramp having a stepped structure for a magnetic disc apparatus'20128,069,734'Multi-vortex flowmeter integrating pressure gauge'20117,986,496'Disk drive device and ramp used therefor'20117,895,904'Multi-vortex flowmeter employing volume flow rate as switching point'20117,768,745'Shock improvement ramp for load/unload mechanism and magnetic disk drive'20107,729,090'Disk drive device, actuator lock mechanism, inertia latch mechanism and inertia lever'20107,488,183'Data storage device and connector disposed therein'20097,163,422'Protection of hard drive interface connector'20077,106,289'Multiple-tone display system'20067,085,107'Inertial latching mechanism for disk drive actuator'20066,888,525'Multiple-tone display system'20056,690,540'Disk drive damper having a thin portion and a plurality of thick portions'20046,587,088'Multiple-tone display system'20036,542,141'Liquid-crystal halftone display system'20036,507,461'Inertial latch for an actuator in a disk drive device'20036,437,765'Multiple-tone display system'20026,320,564'Multiple-tone display system'20016,191,766'Multiple-tone display system'20016,163,440'Inertial latch mechanism for actuator of disk drive device'20006,100,864'Multiple-tone display system'20006,072,451'Liquid-crystal halftone display system'20005,841,416'Method of and apparatus for driving liquid-crystal display device'19985,786,798'Multiple-tone display system'19985,687,164'Decoder employing viterbi decoding method for decoding coded multi-valued signal'19975,671,104'System and method for locking a disk actuator in vertical and horizontal directions'19975,628,571'Bearing structure'19975,610,626'Multiple-tone display system'19975,495,287'Multiple-tone display system'19965,488,414'Video camera apparatus having mode selection display on electronic viewfinder screen'19965,390,293'Information processing equipment capable of multicolor display'19955,250,937'Half tone liquid crystal display circuit with an A.C. voltage divider for drivers'19935,117,246'Camera system having an image blur prevention feature'19924,835,007'Method of manufacturing a photoelectric conversion device'19894,781,767'Photoelectric conversion device'19884,724,157'Method of manufacturing a photoelectric conversion device'1988

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1988–2011Based in Tokyo, JP· patent location history
1993–2006Patents assigned to HITACHI LTD (15)· patent assignee history
1995–2006Based in Mobara, JP· patent location history
1997–2003Based in Sagamihara, JP· patent location history
2004–2010Patents assigned to HITACHI GLOBAL STORAGE TECH (6)· patent assignee history
2004–2015Based in Yamato, JP· patent location history
2006–2014Based in Kanagawa, JP· patent location history
2011–2014Patents assigned to TAKAHASHI KOHJI (6)· patent assignee history
2011–2012Patents assigned to HITACHI GLOBAL STORAGE TECH NL (4)· patent assignee history
2012–2014Patents assigned to HIRAMATSU TOMOKI (4)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI LTD151993–2006
HITACHI GLOBAL STORAGE TECH62004–2010
TAKAHASHI KOHJIself62011–2014
HIRAMATSU TOMOKI42012–2014
HITACHI GLOBAL STORAGE TECH NL42011–2012
Locations
LocationPatentsSpan
Mobara, JP141995–2006
Kanagawa, JP102006–2014
Tokyo, JP51988–2011
Sagamihara, JP41997–2003
Yamato, JP32004–2015