LexDanaLexDanabeta
Inventor

Tohru Ishikawa

Inventor
Kitaibaraki, JP

Overview

52→
Patents
1989–2020
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 52 as inventor

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

F02Mprimary
F02MSupplying combustion engines in general with combustible mixtures or constituents thereof46%
F02DControlling combustion engines17%
F02BInternal-combustion piston engines12%
Y02TClimate change mitigation technologies related to transportation11%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests7%
F02FCylinders, pistons or casings, for combustion engines2%
B05BSpraying apparatus1%
B23KSoldering or unsoldering1%
G06QInformation and communication technology [ict] specially adapted for administrative, commercial, financial, managerial or supervisory purposes1%
G07GRegistering the receipt of cash, valuables, or tokens1%
PatentTitleYear
10,859,047Fuel injection device202010,704,518Spark-ignition direct fuel injection valve202010,288,022Electromagnetic fuel injector201910,280,862Drive unit of fuel injection device201910,240,567Fuel injection device201910,082,117Fuel injection device201810,024,288Spark-ignition direct fuel injection valve20189,726,127'Fuel injection device'20179,677,526'Spark-ignition direct fuel injection valve'20179,617,963'Fuel injection valve'20179,599,083'Fuel injection valve'20179,593,657'Drive unit of fuel injection device'20179,541,046'Fuel injection device'20179,528,481'Fuel injection valve'20169,347,393'Fuel injection device'20169,291,135'Electromagnetic fuel injection valve'20169,103,311'Fuel injection valve'20158,991,783'Fuel injection valve for internal combustion engine'20158,960,157'Drive device for electromagnetic fuel injection valve'20158,899,210'Drive circuit for electromagnetic fuel-injection valve'20148,371,515'Electro-magneto fuel injector'20138,328,121'Multihole injector'20128,113,177'Electromagnetic fuel injector and method for assembling the same'20127,946,274'Electromagnetic fuel injector and method for assembling the same'20117,819,344'Electro-magneto fuel injector'20107,789,073'Fuel injection control apparatus'20107,775,463'Electromagnetic fuel injection valve'20107,774,126'Electromagnetic fuel injection valve device'20107,721,713'Electromagnetic fuel injector and method for assembling the same'20107,607,418'Fuel injection nozzle and method of holding the same'20097,357,123'Electromagnetic actuator, fuel injection valve, method of controlling fuel injection valve, and method of driving the same'20087,334,563'Fuel injector and in-cylinder direct-injection gasoline engine'20087,231,902'Fuel injection valve and internal combustion engine mounting the same'20077,163,162'Fuel-injection valve'20076,976,468'Direct injection gasoline engine'20056,935,578'Fuel injection valve'20056,915,968'Fuel injector'20056,782,867'Direct injection gasoline engine'20046,766,789'Injector driving control apparatus'20046,685,114'Electromagnetic fuel injection valve'20046,675,766'Fuel injection valve and internal combustion engine mounting the same'20046,474,572'Fuel-injection valve'20026,453,872'Fuel injection valve and internal combustion engine mounting the same'20026,367,720'Electromagnetic fuel injection valve'20026,345,601'Direct injection fuel injector and internal combustion engine mounting the same'20026,279,532'Fuel pressure control apparatus for cylinder injection engine'20016,092,743'Fuel injection valve'20005,915,352'In-cylinder fuel injection device and internal combustion engine mounting the same'19995,714,729'TIG welding method and welding torch therefor'19985,346,137'Electromagnetic fuel injection valve'19945,012,982'Electromagnetic fuel injector'19914,843,546'POS system with means for automatically reconfiguring the center PLU and local files'1989

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1989–2013Patents assigned to HITACHI LTD (28)· patent assignee history
1998Based in Yokohama, JP· patent location history
1999–2005Patents assigned to HITACHI CAR ENG CO LTD (4)· patent assignee history
1999–2020Based in Kitaibaraki, JP· patent location history
2005Based in Kataibaraki, JP· patent location history
2010Based in Kitaibaragi, JP· patent location history
2012–2020Patents assigned to HITACHI AUTOMOTIVE SYSTEMS LTD (21)· patent assignee history
2012–2017Patents assigned to ABE MOTOYUKI (10)· patent assignee history
2012–2017Patents assigned to ISHIKAWA TOHRU (10)· patent assignee history
2015–2020Based in Hitachinaka, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI LTD281989–2013
HITACHI AUTOMOTIVE SYSTEMS LTD212012–2020
ABE MOTOYUKI102012–2017
ISHIKAWA TOHRUself102012–2017
HITACHI CAR ENG CO LTD41999–2005
Locations
LocationPatentsSpan
Kitaibaraki, JP351999–2020
Hitachinaka, JP112015–2020
Kitaibaragi, JP12010
Kataibaraki, JP12005
Yokohama, JP11998