LexDanaLexDanabeta
Inventor

Kouji Ishikawa

Inventor
Kasumigaura, JP

Overview

137→
Patents
1990–2020
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 137 as inventor

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

E02Fprimary
E02FDredging30%
F15BSystems acting by means of fluids in general19%
F16HGearing9%
F02DControlling combustion engines5%
Y02TClimate change mitigation technologies related to transportation5%
F04BPositive-displacement machines for liquids3%
B60YIndexing scheme relating to aspects cross-cutting vehicle technology3%
B60WConjoint control of vehicle sub-units of different type or different function2%
B60LPropulsion of electrically-propelled vehicles2%
F01NGas-flow silencers or exhaust apparatus for machines or engines in general2%
PatentTitleYear
10,858,804Work machine202010,801,187Work machine202010,801,532Work machine202010,794,046Work machine202010,774,502Work machine202010,760,246Work machine202010,760,245Drive control device for construction machine202010,626,578Work machine202010,584,722Hydraulic fluid energy regeneration apparatus of work machine202010,563,378Hydraulic system for work machines202010,557,251Work machine202010,526,767Construction machine202010,526,768Hydraulic energy regeneration system for work machine202010,480,442Working machine and working machine monitoring system201910,472,804Hydraulic control system of construction machine201910,443,215Construction machine management system201910,436,229Hydraulic drive system for work machine201910,400,426Hydraulic control system for construction machine201910,364,550Hydraulic drive system of work machine201910,344,458Hydraulic Drive System for work machine201910,330,128Hydraulic control system for work machine201910,309,079Hydraulic control system for work machine201910,301,793Hydraulic drive system for work machine201910,302,028Work machine, power unit, and diesel engine of work machine201910,280,594Hydraulic energy regeneration system for work machine201910,280,593Hydraulic fluid energy regeneration device for work machine201910,273,658Construction machine201910,253,479Hydraulic system for work machine201910,227,997Hydraulic drive system for work machine201910,221,871Construction machinery201910,161,108Hydraulic fluid energy recovery system for work201810,060,450Hydraulic control device for work machine201810,047,795Cage and rollers201810,030,361Construction machine201810,006,472Construction machine201810,006,473Hybrid construction machine20189,951,797Work machine20189,926,950'Hydraulic system for construction machinery'20189,890,518'Hydraulic drive system for construction machine'20189,863,123'Construction machine'20189,822,803'Work machine'20179,777,463'Construction machine'20179,725,878'Hybrid-type construction machine'20179,598,842'Construction machinery'20179,593,464'Construction machine'20179,567,730'Work machine'20179,394,670'Construction machine'20169,341,198'Hydraulic drive device for working machine'20169,290,908'Hybrid construction machine'20169,285,023'Hydraulic drive of operating machine'20169,260,838'Control system for construction machine'20169,255,385'Hybrid construction machine'20169,249,879'Hydraulic drive system for hydraulic working machine'20169,181,684'Pump control unit for hydraulic system'20159,133,602'Information management system for construction machine'20159,085,465'Manufacturing method of high-purity chloropolysilane'20159,074,345'Swing device for construction machine'20159,057,173'Hybrid construction machine'20159,038,375'Hydraulic working machine'20159,020,707'Construction machine having swing body'20159,010,088'Working machine'20159,013,289'Display device for work machine'20158,991,184'Hybrid construction machine'20158,959,918'Hybrid construction machine'20158,958,958'Hybrid construction machine'20158,950,180'Hybrid construction machine'20158,919,115'Hydraulic drive device for hydraulic excavator'20148,881,506'Hydraulic drive device of hydraulic operating machine'20148,756,916'Hydraulic driving device for working machine'20148,726,648'Hydraulic drive device for construction machine'2014D0704202'Construction machine display with graphic user interface'20148,700,275'Hybrid construction machine and auxiliary control device used therein'2014D0700619'Construction machine display with a graphic user interface'20148,650,778'Hydraulic drive device for hydraulic working machine'20148,646,255'Exhaust gas purification system for engineering machine'2014D0693834'Construction machine display with a graphic user interface'20138,589,038'Hydraulic drive apparatus for construction equipment'20138,516,805'Hydraulic driving device for work machine'20138,429,904'Working machine'20138,424,298'Pump torque control system for hydraulic construction machine'20138,371,117'Torque control apparatus for construction machine three-pump system'20138,336,443'Hydraulic working machine'20128,266,903'Engine lag down suppressing device of construction machinery'20128,162,618'Method and device for controlling pump torque for hydraulic construction machine'20128,006,491'Pump control apparatus for construction machine'20117,895,833'Hydraulic drive apparatus'20117,891,458'Steering system for engineering vehicle'20117,584,611'Control system for hydraulic construction machine'20097,562,615'Hydraulic working machine'20097,543,448'Control system for hydraulic construction machine'20097,464,493'Work machine'20087,434,394'Hydraulic drive device'20087,384,368'Toroidal-type continuously variable transmission'20087,255,088'Engine control system for construction machine'20077,244,314'Resin recycling system'20077,127,887'Oil pressure circuit for working machines'20067,077,781'Power roller unit for toroidal-type continuously variable transmission'20067,004,882'Toroidal-type continuously variable transmission'20067,004,883'Toroidal-type continuously variable transmission'20067,001,305'Toroidal type continuously variable transmission'20066,979,277'Toroidal-type continuously variable transmission'20056,951,524'Toroidal-type continuously variable transmission'20056,945,904'Toroidal-type continuously variable transmission'20056,908,410'Thrust bearing and toroidal type continuously variable transmission provided with the same'20056,902,509'Toroidal type continuously variable transmission'20056,752,735'Toroidal-type continuously variable transmission'20046,742,529'Resin recycling system'20046,740,001'Toroidal type continuously variable transmission'20046,682,457'Toroidal type continuously variable transmission'20046,659,908'Double-cavity toroidal-type continuously variable transmission and method for assembling same'20036,619,037'Hydraulic driving device of civil engineering and construction machinery'20036,618,239'Key switch and keyboard'20036,592,491'Toroidal type continuously variable transmission'20036,561,946'Toroidal-type continuously variable transmission'20036,440,034'Toroidal-type continuously variable transmission'20026,375,595'Toroidal type continuously variable transmission'20026,332,857'Loading cam device for, an apparatus for measuring thrust of a loading cam device for, and a method of assembling a toroidal-type continuously variable transmission'20016,325,740'Toroidal-type continuously variable transmission'20016,251,041'Toroidal type continuously variable transmission'20016,251,038'Continuously variable transmission unit'20016,220,028'Hydraulic drive system for hydraulic work vehicle'20016,203,466'Continuously variable transmission apparatus'20016,101,456'Output correcting method in control system, control system, and hydraulic pump control system'20006,074,324'Toroidal type continuously variable transmission'20006,036,618'Continuously variable transmission of half-toroidal type'20005,974,796'Hydraulic circuit system for hydraulic working machine'19995,940,997'Hydraulic circuit system for hydraulic working machine'19995,934,879'Pump torque control system'19995,930,996'Auto-acceleration system for prime mover of hydraulic construction machine and control system for prime mover and hydraulic pump'19995,911,506'Control system for prime mover and hydraulic pump of hydraulic construction machine'19995,907,951'Hydraulic control system for construction machine'19995,890,303'Hydraulic by-pass circuit for a hydraulic shovel'19995,848,531'Hydraulic drive system for construction machines'19985,813,311'Hydraulic control system for hydraulic working machine'19985,326,936'Mounting device for mounting an electronic device on a substrate by the surface mounting technology'19944,998,884'Connector apparatus for high density coaxial cables'19914,912,937'Air conditioning apparatus'1990

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1998–2016Patents assigned to HITACHI CONSTRUCTION MACHINERY (59)· patent assignee history
1998–2019Based in Tsuchiura, JP· patent location history
1999–2012Based in Ibaraki, JP· patent location history
2000–2018Patents assigned to NSK LTD (26)· patent assignee history
2000–2006Based in Fujisawa, JP· patent location history
2001–2008Based in Kanagawa, JP· patent location history
2009–2020Based in Kasumigaura, JP· patent location history
2012–2016Patents assigned to ISHIKAWA KOUJI (35)· patent assignee history
2013–2016Patents assigned to SATAKE HIDETOSHI (15)· patent assignee history
2017–2020Patents assigned to HITACHI CONSTRUCTION MACH CO (45)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI CONSTRUCTION MACHINERY591998–2016
HITACHI CONSTRUCTION MACH CO452017–2020
ISHIKAWA KOUJIself352012–2016
NSK LTD262000–2018
SATAKE HIDETOSHI152013–2016
Locations
LocationPatentsSpan
Kasumigaura, JP672009–2020
Tsuchiura, JP231998–2019
Kanagawa, JP142001–2008
Fujisawa, JP112000–2006
Ibaraki, JP101999–2012