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Inventor

Kenichi Tonomura

Inventor
Tachikawa, JP

Overview

7→
Patents
1980–2004
Patent span
Electricity
Primary field (CPC H)

Patents· 7 as inventor

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

H04Nprimary
H04NPictorial communication, e.g. television44%
G11CStatic stores11%
H01QAntennas, i.e. radio aerials11%
H03GControl of amplification11%
H04LTransmission of digital information, e.g. telegraphic communication11%
H04MTelephonic communication11%
PatentTitleYear
6,724,749'Internet telephony system'20046,476,767'Chip antenna element, antenna apparatus and communications apparatus comprising same'20024,628,510'Memory device'19864,417,277'Television receivers'19834,364,082'Phase detection circuit and automatic tint control circuit of color television receiver utilizing the same'19824,349,834'Chroma signal gain control circuit'19824,209,805'Video signal processing circuit including lock-out prevention means for the intermediate frequency amplifier thereof'1980

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1980Patents assigned to IKEDA TSUNEO (1)· patent assignee history
1980–1982Based in Tachikawa, JP· patent location history
1982–1986Patents assigned to HITACHI LTD (4)· patent assignee history
1983–1986Patents assigned to HITACHI MICROCUMPUTER ENG (2)· patent assignee history
1983Based in Takasaki, JP· patent location history
1986Based in Gunma, JP· patent location history
2002Patents assigned to HITACHI METALS LTD (1)· patent assignee history
2002Based in Gumna-ken, JP· patent location history
2004Patents assigned to FUJITSU LTD (1)· patent assignee history
2004Based in Ishikawa, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI LTD41982–1986
HITACHI MICROCUMPUTER ENG21983–1986
FUJITSU LTD12004
HITACHI METALS LTD12002
IKEDA TSUNEO11980
Locations
LocationPatentsSpan
Tachikawa, JP31980–1982
Ishikawa, JP12004
Gumna-ken, JP12002
Gunma, JP11986
Takasaki, JP11983