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Inventor

Hisafumi Yamada

Inventor
Tokyo, JP

Overview

12→
Patents
1981–2003
Patent span
Electricity
Primary field (CPC H)

Patents· 12 as inventor

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

H04Nprimary
H04NPictorial communication, e.g. television75%
H04LTransmission of digital information, e.g. telegraphic communication13%
H04BTransmission6%
H04QSelecting6%
PatentTitleYear
6,611,958'Electronic program guide feature for AV system'20035,786,848'Three-dimensional video signal generator and three-dimensional video display apparatus'19985,285,285'Method of controlling first items that require prior CRT display and second items that require no prior display'19944,989,081'Home-bus-information system'19914,731,654'Nonvolatile memory system for digital television tuner'19884,667,241'Ghost cancelling system'19874,621,288'Reference time detecting circuit'19864,618,891'Reference time detecting circuit'19864,517,601'Power-responsive ghost cancelling system'19854,357,631'Ghost cancelling system'19824,344,089'Ghost cancelling system'19824,275,420'Television receiver with a ghost detector'1981

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1981–2003Patents assigned to SONY CORP (12)· patent assignee history
1981–1998Based in Tokyo, JP· patent location history
1982Based in Tohshin, JP· patent location history
1987Based in Shinagawa-ku, JP· patent location history
1988Based in Kanagawa, JP· patent location history
2003Patents assigned to SONY ELECTRONICS INC (1)· patent assignee history
2003Based in San Diego, CA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SONY CORP121981–2003
SONY ELECTRONICS INC12003
Locations
LocationPatentsSpan
Tokyo, JP71981–1998
Tohshin, JP21982
San Diego, California, US12003
Kanagawa, JP11988
Shinagawa-ku, JP11987