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Inventor

Kenichi Aonuma

Inventor
Tokyo, JP

Overview

3→
Patents
1999
Patent span
Electricity
Primary field (CPC H)

Patents· 3 as inventor

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 systems38%
Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications38%
H03KPulse technique13%
Y02PClimate change mitigation technologies in the production or processing of goods13%
PatentTitleYear
5,999,420'Switching power source'19995,909,107'Step up switching power unit and filter circuit'19995,856,917'Electric power device with improved power factor'1999

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1999Patents assigned to TDK CORP (3)· patent assignee history
1999Based in Tokyo, JP· patent location history
1999Based in Sakura, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
TDK CORP31999
Locations
LocationPatentsSpan
Tokyo, JP21999
Sakura, JP11999