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Inventor

Tetsuya Kawashima

Inventor
Matsumoto, JP

Overview

45→
Patents
2006–2020
Patent span
Electricity
Primary field (CPC H)

Patents· 45 as inventor

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

H02Mprimary
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 systems30%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h1020%
Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications13%
H05KPrinted circuits7%
H03KPulse technique4%
F16LPipes3%
H01LSemiconductor devices3%
H02JElectric power networks3%
G05FSystems for regulating electric or magnetic variables2%
G06FElectric digital data processing2%
PatentTitleYear
10,848,146Reset circuit202010,236,680Control circuit of switching power supply device201910,141,861Power conversion unit, power converter and method of manufacturing power converter201810,014,793Power conversion unit, power converter, and power conversion method201810,008,953Power conversion device and power conversion method for power conversion device20189,985,535Control circuit of switching power supply, insulated switching power supply20189,917,529'Power conversion unit, power converter and method of manufacturing power converter'20189,906,154'Power conversion unit and power conversion device'20189,807,913'Cooling structure of heating element and power conversion device'20179,762,130'Switching controller for switching power supply'20179,755,527'Switching power supply device'20179,729,069'Control device of a switching power supply'20179,602,012'Apparatus and method for controlling switching power supply'20179,532,489'Power conversion device'20169,497,887'Cooling structure for heating element and power converter'20169,437,797'Cooling structure of heating element and power conversion device'20169,236,321'Semiconductor device and manufacturing method thereof'20169,124,187'Control device for switching power source'20158,934,274'Power conversion apparatus'20158,847,566'Switching power supply with mode transition control'20148,692,531'Switching regulator performing output voltage changing function'20148,618,632'Semiconductor device and multi-layered wiring substrate'20138,598,942'Current correction circuit for power semiconductor device and current correction method'20138,592,914'Semiconductor device and manufacturing method of the same'20138,558,527'Switching power supply system provided with under voltage lock out circuit'20138,552,702'Digital control switching regulator having an input voltage detection circuit'20138,445,669'Production process of ethynylthymidine compounds from 5-methyluridine as a starting material'20138,441,242'Digitally controlled integrated DC-DC converter with transient suppression'20138,422,261'Semiconductor device and power supply device using the same'20138,421,430'Digital control switching power supply unit'2013RE043663'Semiconductor device'20128,237,232'Semiconductor device including a DC-DC converter having a metal plate'20128,237,493'Semiconductor device and power supply device using the same'20128,164,318'Digital control switching power supply unit'20128,067,979'Semiconductor device and power supply device using the same'20118,044,520'Semiconductor device'20118,008,699'Semiconductor device with circuit for reduced parasitic inductance'20117,932,588'Semiconductor device including a DC-DC converter having a metal plate'2011RE041869'Semiconductor device'20107,812,578'DC-DC converter'20107,782,025'Semiconductor device and power supply device using the same'20107,687,885'Semiconductor device with reduced parasitic inductance'20107,679,173'Semiconductor device including a DC-DC converter'20107,480,163'Semiconductor device and power supply device using the same'20097,145,224'Semiconductor device'2006

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2006–2013Based in Hitachi, JP· patent location history
2010–2016Patents assigned to RENESAS ELECTRONICS CORP (12)· patent assignee history
2010–2019Based in Matsumoto, JP· patent location history
2010–2013Based in Hitachinaka, JP· patent location history
2011–2014Patents assigned to KAWASHIMA TETSUYA (16)· patent assignee history
2012–2020Patents assigned to FUJI ELECTRIC CO LTD (17)· patent assignee history
2012–2014Patents assigned to SASAKI MASAHIRO (6)· patent assignee history
2015–2017Based in Nagano, JP· patent location history
2016–2018Patents assigned to HITACHI LTD (9)· patent assignee history
2016–2018Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
FUJI ELECTRIC CO LTD172012–2020
KAWASHIMA TETSUYAself162011–2014
RENESAS ELECTRONICS CORP122010–2016
HITACHI LTD92016–2018
SASAKI MASAHIRO62012–2014
Locations
LocationPatentsSpan
Matsumoto, JP152010–2019
Hitachi, JP112006–2013
Tokyo, JP92016–2018
Hitachinaka, JP42010–2013
Nagano, JP22015–2017