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Inventor

Keizo Shimada

Inventor
Hitachi, JP

Overview

13→
Patents
1995–2013
Patent span
Performing operations
Primary field (CPC B)

Patents· 13 as inventor

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

B60Lprimary
B60LPropulsion of electrically-propelled vehicles17%
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 systems17%
Y02TClimate change mitigation technologies related to transportation17%
B60KArrangement or mounting of propulsion units or of transmissions in vehicles9%
B60WConjoint control of vehicle sub-units of different type or different function9%
H02PControl or regulation of electric motors, electric generators or dynamo-electric converters9%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests6%
B60TVehicle brake control systems or parts thereof3%
B62DMotor vehicles3%
G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices3%
PatentTitleYear
8,523,296'Electric drive vehicle'20138,151,915'Electric drive vehicle'20127,888,894'Electric motor control system, series hybrid vehicle, electric motor control apparatus, and electric motor control method'20117,841,434'Electric drive system for vehicle, electric control system for vehicle, electric drive method for vehicle'20107,583,036'Electrically driven vehicle'20097,548,439'Electric power converter for reducing generated high frequency components'20097,542,312'Electric power converter'20097,315,144'AC drive apparatus, vehicle control apparatus, and power conversion method and vehicle control method'20087,025,514'Development apparatus for manufacturing semiconductor device'20066,084,785'Electric power converter'20005,959,858'Electric power conversion apparatus'19995,892,674'Method and apparatus for power converting AC into DC or DC into AC by converter having common phase connection'19995,446,645'Inverter apparatus and uinterruptible power supply using the same'1995

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1995–2013Patents assigned to HITACHI LTD (11)· patent assignee history
1995–2013Based in Hitachi, JP· patent location history
1999Based in Juo, JP· patent location history
2000Based in Suwa, JP· patent location history
2006Based in Miyazaki, JP· patent location history
2008–2012Patents assigned to HITACHI CONSTRUCTION MACHINERY (3)· patent assignee history
2009Based in Chiyoda-ku, JP· patent location history
2012–2013Patents assigned to IKIMI TAKASHI (2)· patent assignee history
2012–2013Patents assigned to KIKUCHI AKIRA (2)· patent assignee history
2012–2013Patents assigned to SHIMADA KEIZO (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI LTD111995–2013
HITACHI CONSTRUCTION MACHINERY32008–2012
IKIMI TAKASHI22012–2013
KIKUCHI AKIRA22012–2013
SHIMADA KEIZOself22012–2013
Locations
LocationPatentsSpan
Hitachi, JP81995–2013
Chiyoda-ku, JP12009
Miyazaki, JP12006
Suwa, JP12000
Juo, JP11999