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Inventor

Akihito Numata

Inventor
Ibaraki, JP

Overview

16→
Patents
1995–2019
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 16 as inventor

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

F02Dprimary
F02DControlling combustion engines38%
Y02TClimate change mitigation technologies related to transportation24%
F01NGas-flow silencers or exhaust apparatus for machines or engines in general16%
G01MTesting static or dynamic balance of machines or structures16%
F02PIgnition, other than compression ignition, for internal-combustion engines3%
Y02ATechnologies for adaptation to climate change3%
PatentTitleYear
10,508,608Control device for engine201910,012,160Control device and control method of engine20189,429,089'Control device of engine'20168,573,185'Diagnostic device for internal-combustion engine'20138,190,351'Diagnostic control apparatus for internal combustion engines'20128,011,174'Apparatus for diagnosing exhaust gas purifying device'20116,474,145'Combustion state detection system for internal combustion engine'20026,003,309'Diagnostic apparatus for exhaust gas clarification apparatus for internal combustion engine'19995,991,684'Apparatus and method of detecting combustion state of internal combustion engine and recording medium storing program for execution of the detecting method'19995,991,685'Combustion state detection system for internal combustion engine'19995,951,618'Detector device for combustion state in internal combustion engine'19995,828,976'Detector device for combustion state in internal combustion engine'19985,758,491'Diagnosing system and method of catalytic converter for controlling exhaust gas of internal combustion engine'19985,740,676'Diagnostic apparatus for exhaust gas clarification apparatus for internal combustion engine'19985,557,933'Malfunction diagnosis apparatus for internal combustion engine'19965,400,592'Diagnostic apparatus for catalytic converter of an internal combustion engine'1995

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1995–2013Patents assigned to HITACHI LTD (13)· patent assignee history
1995–1999Based in Urizura-machi, JP· patent location history
1996–2018Based in Ibaraki, JP· patent location history
1998–2002Patents assigned to HITACHI CAR ENG CO LTD (8)· patent assignee history
2012–2016Patents assigned to FUKUCHI EISAKU (3)· patent assignee history
2012–2016Patents assigned to NUMATA AKIHITO (3)· patent assignee history
2012–2016Based in Hitachiomiya, JP· patent location history
2013Based in Hitachiota, JP· patent location history
2016–2019Patents assigned to HITACHI AUTOMOTIVE SYSTEMS LTD (3)· patent assignee history
2019Based in Hitachinaka, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI LTD131995–2013
HITACHI CAR ENG CO LTD81998–2002
FUKUCHI EISAKU32012–2016
HITACHI AUTOMOTIVE SYSTEMS LTD32016–2019
NUMATA AKIHITOself32012–2016
Locations
LocationPatentsSpan
Ibaraki, JP71996–2018
Urizura-machi, JP41995–1999
Hitachiomiya, JP22012–2016
Hitachinaka, JP12019
Hitachiota, JP12013