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Inventor

Haruhiko Koizumi

Inventor
Osaka, JP

Overview

13→
Patents
1994–2014
Patent span
Electricity
Primary field (CPC H)

Patents· 13 as inventor

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

H03Fprimary
H03FAmplifiers53%
H03DDemodulation or transference of modulation from one carrier to another12%
H03GControl of amplification12%
C02FTreatment of water, waste water, sewage, or sludge6%
G01RMeasuring electric variables6%
H03JTuning resonant circuits6%
H04BTransmission6%
PatentTitleYear
8,692,619'High frequency power amplifier'20147,990,221'Detector circuit and system for a wireless communication'20117,733,187'High frequency power amplifier'20107,692,491'Radio-frequency power amplifier'20107,679,438'High frequency circuit, semiconductor device, and high frequency power amplification device'20107,449,957'Radio frequency power amplifier'20087,439,808'High-frequency power amplifier'20087,421,255'Transmission apparatus and mobile communication terminal apparatus'20087,245,182'High frequency amplifier circuit'20076,871,058'Frequency conversion circuit'20056,671,505'Frequency converter'20035,546,051'Power amplifier and power amplification method'19965,340,458'Electrolytic ion water generator'1994

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1994Patents assigned to TOHO TECHNICAL SERVICE CO LTD (1)· patent assignee history
1994Based in Chigasaki, JP· patent location history
1996Patents assigned to MATSUSHITA ELECTRONICS CORP (1)· patent assignee history
1996–2014Based in Osaka, JP· patent location history
2003–2008Patents assigned to MATSUSHITA ELECTRIC INDUSTRIAL CO LTD (5)· patent assignee history
2005–2008Based in Suita, JP· patent location history
2008–2014Patents assigned to PANASONIC CORP (6)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
PANASONIC CORP62008–2014
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD52003–2008
MATSUSHITA ELECTRONICS CORP11996
TOHO TECHNICAL SERVICE CO LTD11994
Locations
LocationPatentsSpan
Osaka, JP91996–2014
Suita, JP32005–2008
Chigasaki, JP11994