Inventor

Masahiko Hirokawa

Inventor

Tokyo, JP

Overview

2003–2013

Patent span

Electricity

Primary field (CPC H)

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 systems25%

H01MProcesses or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy13%

H02JElectric power networks13%

Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications13%

Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution13%

G01RMeasuring electric variables6%

G05FSystems for regulating electric or magnetic variables6%

H01GCapacitors6%

H02HEmergency protective circuit arrangements6%

PatentTitleYear

Assembled from patent assignee/location history and declaration credentials.

2003–2013Patents assigned to TDK CORP (7)· patent assignee history

2003–2013Based in Tokyo, JP· patent location history

2013Patents assigned to HIRAO NORIYUKI (3)· patent assignee history

2013Patents assigned to HIROKAWA MASAHIKO (3)· patent assignee history

2013Patents assigned to NAKAZAWA HIROSHI (3)· patent assignee history

2013Patents assigned to SAKAMOTO TAKUMI (3)· patent assignee history

Assignee and location history derived from the patent record.

Assignees

Locations

Location	Patents	Span
Tokyo, JP	7	2003–2013