Inventor · disambiguated record
Hisafumi Yamada
Also filed as: YAMADA HISAFUMI
12 granted patents·1 pending application·487 citations·filing 1980–2003
92Inventor score
Files withSONY CORP13
Top patents by PatentIndex Score
13 records- 0196US4989081AHome-bus-information systemSONY CORP·Filed 1989·Granted Jan 29, 1991·264 cites·18 claims
- 0292US6611958B1Electronic program guide feature for AV systemSONY CORP·Filed 1999·Granted Aug 26, 2003·138 cites·20 claims
- 0362US4731654ANonvolatile memory system for digital television tunerSONY CORP·Filed 1985·Granted Mar 15, 1988·19 cites·6 claims
- 0459US5786848AThree-dimensional video signal generator and three-dimensional video display apparatusSONY CORP·Filed 1996·Granted Jul 28, 1998·25 cites·4 claims
- 0548US2004019906A1Electronic program guide feature for AV systemSONY CORP·Filed 2003·Application pending·0 cites
- 0647US4344089AGhost cancelling systemSONY CORP·Filed 1981·Granted Aug 10, 1982·12 cites·8 claims
- 0743US4517601APower-responsive ghost cancelling systemSONY CORP·Filed 1983·Granted May 14, 1985·7 cites·7 claims
- 0843US4275420ATelevision receiver with a ghost detectorSONY CORP·Filed 1980·Granted Jun 23, 1981·7 cites·6 claims
- 0937US4667241AGhost cancelling systemSONY CORP·Filed 1984·Granted May 19, 1987·5 cites·8 claims
- 1035US4621288AReference time detecting circuitSONY CORP·Filed 1982·Granted Nov 4, 1986·4 cites·4 claims
- 1134US4357631AGhost cancelling systemSONY CORP·Filed 1981·Granted Nov 2, 1982·4 cites·6 claims
- 1230US5285285AMethod of controlling first items that require prior CRT display and second items that require no prior displaySONY CORP·Filed 1992·Granted Feb 8, 1994·2 cites·3 claims
- 1327US4618891AReference time detecting circuitSONY CORP·Filed 1982·Granted Oct 21, 1986·0 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →