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Inventor

Isao Akitake

Inventor
Yokohama, JP

Overview

5→
Patents
1978–1996
Patent span
Electricity
Primary field (CPC H)

Patents· 5 as inventor

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

H03Dprimary
H03DDemodulation or transference of modulation from one carrier to another22%
G11BInformation storage based on relative movement between record carrier and transducer11%
H01PWaveguides11%
H03GControl of amplification11%
H03HImpedance networks, e.g. resonant circuits11%
H04BTransmission11%
H04HBroadcast communication11%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h1011%
PatentTitleYear
5,554,960'Branching filter, branching filter module and radio commnication apparatus'19964,349,696'AM Stereophonic demodulator circuit for amplitude/angle modulation system'19824,146,842'Noise muting circuit in FM receiver'19794,139,825'Audio frequency amplifier'19794,122,394'Phase-shifting multiplication type FM signal demodulation circuit'1978

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1978–1996Patents assigned to HITACHI LTD (5)· patent assignee history
1978–1979Based in Toyokawa, JP· patent location history
1979–1982Based in Yokohama, JP· patent location history
1996Based in Chigasaki, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI LTD51978–1996
Locations
LocationPatentsSpan
Yokohama, JP21979–1982
Toyokawa, JP21978–1979
Chigasaki, JP11996