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Inventor

Takeshi Tokuyama

Inventor
Hitachi, JP

Overview

55→
Patents
1977–2021
Patent span
Electricity
Primary field (CPC H)

Patents· 55 as inventor

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

H10Wprimary
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h1019%
H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems16%
H05KPrinted circuits14%
H01LSemiconductor devices12%
Y02TClimate change mitigation technologies related to transportation8%
B60LPropulsion of electrically-propelled vehicles6%
H02PControl or regulation of electric motors, electric generators or dynamo-electric converters5%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests5%
B60KArrangement or mounting of propulsion units or of transmissions in vehicles4%
B60YIndexing scheme relating to aspects cross-cutting vehicle technology3%
PatentTitleYear
10,966,355Electric power conversion apparatus202110,856,450Power conversion apparatus202010,818,573Power semiconductor module with heat dissipation plate202010,763,190Power semiconductor module, power conversion device using same, and method for manufacturing power conversion device202010,615,102Power semiconductor module202010,524,398Electric power conversion apparatus201910,367,426Power conversion device201910,348,214Power module, power converter device, and electrically powered vehicle201910,238,015Power conversion apparatus201910,194,563Power conversion device201910,177,676Power converter201910,128,164Electronic device and method of manufacturing the electronic device201810,068,880Power module201810,027,246Power semiconductor module and electric power conversion device20189,852,962Waterproof electronic device and manufacturing method thereof20179,729,076'Power module, power converter device, and electrically powered vehicle'20179,648,791'Electric power conversion apparatus'20179,609,789'Power conversion apparatus'20179,583,264'Capacitor device and electrical power conversion device'20179,565,791'Power conversion apparatus'20179,433,134'Power semiconductor module and power converter using the same'20169,407,163'Power module, power converter device, and electrically powered vehicle'20169,407,166'Inverter device'20169,362,261'Power semiconductor module'20169,307,666'Electric circuit device, electric circuit module, and power converter'20169,137,932'Electric power conversion apparatus'20159,042,101'Electric power conversion apparatus'20159,000,553'Power module and power converter containing power module'20158,952,525'Semiconductor module and method for manufacturing semiconductor module'20158,946,567'Power module, power converter device, and electrically powered vehicle'20158,917,509'Electric power conversion apparatus'20148,847,374'Power semiconductor module and manufacturing method thereof'20148,743,548'Electric circuit device, electric circuit module, and power converter'20148,723,306'Power semiconductor unit, power module, power semiconductor unit manufacturing method, and power module manufacturing method'20148,675,364'Power module and power conversion device'20148,659,130'Power module and power module manufacturing method'20148,653,652'Semiconductor device, power semiconductor module and power conversion device equipped with power semiconductor module'20148,634,220'Power conversion apparatus'20148,503,209'Power conversion apparatus and cooling structure therefor'20138,416,574'Electric power conversion apparatus'2013D0651565'Portion of power module for power inverter'2012D0651170'Portion of a power module for power inverter'20118,081,472'Electric circuit device, electric circuit module, and power converter'20118,064,234'Power conversion apparatus'20117,978,471'Electric power conversion apparatus'20117,968,925'Power semiconductor module for inverter circuit system'20117,961,472'Electric circuit device, electric circuit module, and power converter'20117,812,443'Power semiconductor module for inverter circuit system'20106,492,593'Gold wire for semiconductor element connection and semiconductor element connection method'20025,991,752'Method and apparatus for deriving association rules from data and for segmenting rectilinear regions'19995,983,222'Method and apparatus for computing association rules for data mining in large database'19995,870,748'Method and apparatus for deriving an optimized confidence rule'19995,812,997'Method and apparatus for deriving an association rule between data'19985,729,628'Image segmenting method and apparatus'19984,005,450'Insulated gate field effect transistor having drain region containing low impurity concentration layer'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–2021Patents assigned to HITACHI LTD (23)· patent assignee history
1998–1999Based in Machida, JP· patent location history
2002Based in Mitaka, JP· patent location history
2010–2021Based in Hitachi, JP· patent location history
2011–2020Patents assigned to HITACHI AUTOMOTIVE SYSTEMS LTD (25)· patent assignee history
2011–2016Patents assigned to NAKATSU KINYA (16)· patent assignee history
2011–2016Patents assigned to TOKUYAMA TAKESHI (16)· patent assignee history
2011–2016Patents assigned to SATOH TOSHIYA (8)· patent assignee history
2016–2020Based in Tokyo, JP· patent location history
2019–2020Based in Hitachinaka, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI AUTOMOTIVE SYSTEMS LTD252011–2020
HITACHI LTD231977–2021
NAKATSU KINYA162011–2016
TOKUYAMA TAKESHIself162011–2016
SATOH TOSHIYA82011–2016
Locations
LocationPatentsSpan
Hitachi, JP342010–2021
Tokyo, JP122016–2020
Machida, JP51998–1999
Hitachinaka, JP22019–2020
Mitaka, JP12002