Inventor · disambiguated record
Heitaro Nakajima
Also filed as: NAKAJIMA HEITARO
5 granted patents·123 citations·filing 1977–1997
81Inventor score
Files withSONY CORP5
Top patents by PatentIndex Score
5 records- 0177US4138121ATone arm assemblySONY CORP·Filed 1977·Granted Feb 6, 1979·20 cites·23 claims
- 0274US5832088AMethod and apparatus for preventing data copying from a disk using data lengths too large for a pirate mediumSONY CORP·Filed 1995·Granted Nov 3, 1998·76 cites·21 claims
- 0370US5111442ARecordable optical disc storage device with limited storage capacity, and recording apparatus thereforSONY CORP·Filed 1989·Granted May 5, 1992·16 cites·12 claims
- 0457US4445150ARecording in a single track visual signals associated with audio signals recorded in opposed directions in plural tracksSONY CORP·Filed 1981·Granted Apr 24, 1984·11 cites·8 claims
- 0529US6344940B1Method and apparatus for adding 1/f fluctuation to an audio signalSONY CORP·Filed 1997·Granted Feb 5, 2002·0 cites·22 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →