LexDanaLexDanabeta
Inventor

Takefumi Okumura

Inventor
Hitachinaka, JP

Overview

18→
Patents
2007–2021
Patent span
General tagging of new technological developments
Primary field (CPC Y)

Patents· 18 as inventor

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

Y02Eprimary
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution28%
H01MProcesses or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy25%
Y02TClimate change mitigation technologies related to transportation13%
Y02PClimate change mitigation technologies in the production or processing of goods8%
C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium5%
C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds5%
H01BCables5%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds3%
F02BInternal-combustion piston engines2%
F02DControlling combustion engines2%
PatentTitleYear
10,934,962Abnormality diagnosis device for in-cylinder pressure sensor20219,406,929'Lithium ion battery'20169,306,214'Lithium ion battery'20169,118,087'Electrode for lithium secondary battery'20158,828,584'Lithium-ion rechargeable battery module, vehicle with the battery module and generating system with the battery module'20148,742,728'System for controlling charging and discharging of lithium ion battery'20148,642,217'Lithium secondary battery'20148,581,555'Secondary battery system including an arrangement to determine a temporary increase in direct current resistance of the secondary battery'20138,541,118'Lithium-ion battery and method for regenerating the same'20138,409,757'Lithium secondary battery'20138,263,269'Lithium secondary battery'20127,923,580'Polymerizable boric compounds, methods of producing the same, polymerizable compositions and ionic-conductive polymeric electrolytes'20117,862,933'Lithium secondary battery'20117,759,003'Polymerizable boric compounds, methods of producing the same, polymerizable compositions and ionic-conductive polymeric electrolytes'20107,704,642'Cationic conductor, its intermediate, and lithium secondary battery using the conductor'20107,473,492'Lithium secondary battery'20097,300,991'Cationic conductor, its intermediate, and lithium secondary battery using the conductor'20077,230,057'Boron-containing compound, ion-conductive polymer and polyelectrolyte for electrochemical devices'2007

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2007–2015Patents assigned to HITACHI LTD (11)· patent assignee history
2007–2010Based in Hitachi, JP· patent location history
2010–2015Based in Hitachinaka, JP· patent location history
2011–2013Patents assigned to HITACHI VEHICLE ENERGY LTD (3)· patent assignee history
2012–2016Patents assigned to OKUMURA TAKEFUMI (9)· patent assignee history
2013–2014Patents assigned to INOUE RYO (3)· patent assignee history
2013–2015Patents assigned to ABE TOSHIO (2)· patent assignee history
2016Based in Tokyo, JP· patent location history
2021Based in Kure, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI LTD112007–2015
OKUMURA TAKEFUMIself92012–2016
HITACHI VEHICLE ENERGY LTD32011–2013
INOUE RYO32013–2014
ABE TOSHIO22013–2015
Locations
LocationPatentsSpan
Hitachinaka, JP112010–2015
Hitachi, JP42007–2010
Tokyo, JP22016
Kure, JP12021