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Inventor

Takafumi Maruyama

Inventor
Osaka, JP

Overview

24→
Patents
1991–2019
Patent span
Physics
Primary field (CPC G)

Patents· 24 as inventor

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

G11Cprimary
G11CStatic stores26%
H02PControl or regulation of electric motors, electric generators or dynamo-electric converters11%
B60KArrangement or mounting of propulsion units or of transmissions in vehicles8%
B60LPropulsion of electrically-propelled vehicles8%
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 systems8%
Y02TClimate change mitigation technologies related to transportation8%
G06FElectric digital data processing5%
B60WConjoint control of vehicle sub-units of different type or different function3%
B62DMotor vehicles3%
C07KPeptides3%
PatentTitleYear
10,210,930Nonvolatile semiconductor storage apparatus201910,013,372Input/output apparatus and method20189,180,914'Support structure for vehicle'20158,799,530'Data processing system with a host bus adapter (HBA) running on a PCIe bus that manages the number enqueues or dequeues of data in order to reduce bottleneck'20148,786,116'Vehicle control device and diesel hybrid vehicle system'20148,704,482'Power conversion device'20148,593,888'Semiconductor memory device'20137,616,488'Current or voltage measurement circuit, sense circuit, semiconductor non-volatile memory, and differential amplifier'20097,453,231'Electric vehicle control device'20087,422,863'Molting hormone receptor and method for screening ligand to the receptor'20087,408,820'Nonvolatile semiconductor memory with virtual ground array'20087,234,116'Communications system for transmitting, receiving, and displaying an image and associated image action information'20077,123,510'Non-volatile semiconductor memory device'20067,088,620'Nonvolatile semiconductor memory device'20066,995,540'Electric motor car controller'20066,822,907'Nonvolatile semiconductor memory device and data readout method for the same'20046,407,946'Nonvolatile semiconductor memory device'20026,272,049'Non-volatile semiconductor memory device having increased operating speed'20016,188,608'Nonvolatile semiconductor memory device'20016,087,791'Control apparatus for internal combustion type electric locomotive'20005,317,937'Control system for vehicle automatic transmission'19945,155,675'Method of controlling an inverter'19925,060,129'Method of controlling three-phase, three-level inverter'19915,041,927'Magnetic disc driving apparatus having speed and position control'1991

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991–2014Patents assigned to MITSUBISHI ELECTRIC CORP (8)· patent assignee history
1991–1992Based in Amagasaki, JP· patent location history
2000–2018Based in Tokyo, JP· patent location history
2001–2008Patents assigned to MATSUSHITA ELECTRIC INDUSTRIAL CO LTD (7)· patent assignee history
2001–2013Based in Osaka, JP· patent location history
2006Based in Ibaraki, JP· patent location history
2009–2013Patents assigned to PANASONIC CORP (2)· patent assignee history
2013–2014Patents assigned to MARUYAMA TAKAFUMI (3)· patent assignee history
2014–2018Patents assigned to HITACHI LTD (2)· patent assignee history
2019Based in Hiroshima, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
MITSUBISHI ELECTRIC CORP81991–2014
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD72001–2008
MARUYAMA TAKAFUMIself32013–2014
HITACHI LTD22014–2018
PANASONIC CORP22009–2013
Locations
LocationPatentsSpan
Osaka, JP72001–2013
Tokyo, JP62000–2018
Amagasaki, JP31991–1992
Ibaraki, JP22006
Hiroshima, JP12019