Inventor · disambiguated record
Tetsuo Sekiya
Also filed as: SEKIYA TETSUO
19 granted patents·381 citations·filing 1974–2009
95Inventor score
Top patents by PatentIndex Score
19 records- 0194US4167692ABrush-less DC motorSONY CORP·Filed 1977·Granted Sep 11, 1979·71 cites·17 claims
- 0291US4729048AMagnetic transducer combination with formatting, data, and servo headsSONY CORP·Filed 1986·Granted Mar 1, 1988·50 cites·2 claims
- 0386US5822159AThin-film magnetic head, magnetoresistance effect magnetic head and composite magnetic headSONY CORP·Filed 1997·Granted Oct 13, 1998·41 cites·6 claims
- 0486US4701815ATracking servo system for disc memorySONY CORP·Filed 1986·Granted Oct 20, 1987·35 cites·18 claims
- 0583US5065390AOptical playback headSONY CORP·Filed 1989·Granted Nov 12, 1991·28 cites·22 claims
- 0678US5313342AAnalog/digital compatible reproducing systemSONY CORP·Filed 1992·Granted May 17, 1994·27 cites·12 claims
- 0772US5260836AApparatus for reproducing digital and analog audio signalsSONY CORP·Filed 1990·Granted Nov 9, 1993·23 cites·28 claims
- 0871US4673998AMagnetic transducer head having series connected magnetroresistance effect sensing element with head output connected between the sensing elementsSONY CORP·Filed 1983·Granted Jun 16, 1987·16 cites·4 claims
- 0969US5872691AThin film magnetic head, magnetoresistance effect magnetic head and composite magnetic headSONY CORP·Filed 1997·Granted Feb 16, 1999·18 cites·2 claims
- 1067US4757410AMagnetoresistance effect for short and long wavelength recordingsSONY CORP·Filed 1985·Granted Jul 12, 1988·15 cites·3 claims
- 1163US4516179AMagnetic transducer head utilizing magnetoresistance effectSONY CORP·Filed 1982·Granted May 7, 1985·11 cites·5 claims
- 1259US4713710ACompact multiple magnetic head apparatusSONY CORP·Filed 1985·Granted Dec 15, 1987·13 cites·1 claims
- 1352US5424890AMagnetoresistance effect type thin film headSONY CORP·Filed 1994·Granted Jun 13, 1995·8 cites·4 claims
- 1446US5436772AMagnetic recording and reproducing apparatus having magneto-resistance effect elementSONY CORP·Filed 1992·Granted Jul 25, 1995·8 cites·3 claims
- 1541US4524401AMagnetic transducer head utilizing magneto resistance effect with a bias field and partial saturationSONY CORP·Filed 1981·Granted Jun 18, 1985·4 cites·11 claims
- 1635US5145259ABearing systemSONY CORP·Filed 1990·Granted Sep 8, 1992·7 cites·3 claims
- 1732US4077373AIgnition timing control device for an internal combustion engineHONDA MOTOR CO LTD·Filed 1974·Granted Mar 7, 1978·4 cites·4 claims
- 1830US8575878B2Energy converterSEKIYA TETSUO·Filed 2009·Granted Nov 5, 2013·1 cites·8 claims
- 1927US5197806ABearing systemSONY CORP·Filed 1992·Granted Mar 30, 1993·1 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →