Inventor · disambiguated record
Hitoshi Okada
Also filed as: OKADA HITOSHI · UMEZAWA HIROYUKI
40 granted patents·4 pending applications·515 citations·filing 1977–2011
98Inventor score
Top patents by PatentIndex Score
44 records- 0195US4338683AVideodisc player with constant turntable velocitySONY CORP·Filed 1980·Granted Jul 6, 1982·53 cites·1 claims
- 0288US5530336ABattery protection circuitSONY CORP·Filed 1993·Granted Jun 25, 1996·133 cites·6 claims
- 0384US7283286B2Hologram recording/reproducing device and optical unitSONY CORP·Filed 2005·Granted Oct 16, 2007·9 cites·8 claims
- 0480US6632274B2Ultrafine particle dispersion composition, composition for interlayer for laminated glass, interlayer and laminated glassASAHI GLASS CO LTD·Filed 2002·Granted Oct 14, 2003·25 cites·19 claims
- 0575US6413373B1Process for producing silica particles suitable for use as filler for paperOJI PAPER CO·Filed 2001·Granted Jul 2, 2002·13 cites·13 claims
- 0675US4899951ABraking mechanism for use in a magnetic recording apparatusCLARION CO LTD·Filed 1988·Granted Feb 13, 1990·21 cites·10 claims
- 0774US8194517B2Hologram recording and reproducing device and method for recording hologramOKADA HITOSHI·Filed 2011·Granted Jun 5, 2012·3 cites·4 claims
- 0873US4227224ACassette tape recording/reproducing apparatusCLARION CO LTD·Filed 1979·Granted Oct 7, 1980·15 cites·22 claims
- 0968US7963138B2Method and apparatus for forming a changed diameter portion of a workpieceSANGO CO LTD·Filed 2005·Granted Jun 21, 2011·3 cites·13 claims
- 1068US4423445AClutch system in a tape playerCLARION CO LTD·Filed 1981·Granted Dec 27, 1983·14 cites·8 claims
- 1168US4118736AMethod of and apparatus for controlling the optical reading of recorded informationSONY CORP·Filed 1977·Granted Oct 3, 1978·14 cites·14 claims
- 1266US4964589AMode changing mechanism for a tape playerCLARION CO LTD·Filed 1989·Granted Oct 23, 1990·14 cites·3 claims
- 1366US4586096ACassette loading/ejecting deviceCLARION CO LTD·Filed 1983·Granted Apr 29, 1986·13 cites·3 claims
- 1465US8416480B2Hologram reproducing apparatus, hologram reproducing method, and phase modulating elementTANAKA TOMIJI·Filed 2008·Granted Apr 9, 2013·2 cites·7 claims
- 1565US6654323B2Method of tracking servo for optical pickup deviceSONY CORP·Filed 2001·Granted Nov 25, 2003·6 cites·8 claims
- 1665US4785362ADriving force branching gear mechanismCLARION CO LTD·Filed 1987·Granted Nov 15, 1988·20 cites·2 claims
- 1765US4747089AMethod and apparatus for focusing servo controlSONY CORP·Filed 1986·Granted May 24, 1988·16 cites·5 claims
- 1863US4224647AMagnetic tape-record/playback apparatusCLARION CO LTD·Filed 1979·Granted Sep 23, 1980·10 cites·6 claims
- 1962US4310912AServo system for recording and/or reproducing apparatus using a rotatable recording carrierSONY CORP·Filed 1977·Granted Jan 12, 1982·11 cites·5 claims
- 2061US7969846B2Hologram recording and reproducing device and method for recording hologramSONY CORP·Filed 2009·Granted Jun 28, 2011·0 cites·4 claims
- 2159US4511940ATape player having motor-driven tape-pack loading mechanismCLARION CO LTD·Filed 1981·Granted Apr 16, 1985·10 cites·9 claims
- 2258US5168487AOptical recording and/or reproducing apparatusSONY CORP·Filed 1990·Granted Dec 1, 1992·11 cites·8 claims
- 2358US4972337ADevice for controlling rotation of a magnet used in a magneto-optical recording systemSONY CORP·Filed 1987·Granted Nov 20, 1990·11 cites·7 claims
- 2458US4479155AAuto-loading mechanism in a magnetic recording/reproducing apparatusTAKAI KAZUKI·Filed 1981·Granted Oct 23, 1984·11 cites·4 claims
- 2558US4403265APower loading/unloading mechanism for tape record/playback apparatusCLARION CO LTD·Filed 1981·Granted Sep 6, 1983·9 cites·3 claims
- 2656US8174745B2Optical unit, method for controlling drive, and holographic apparatusOKADA HITOSHI·Filed 2008·Granted May 8, 2012·0 cites·9 claims
- 2754US6685907B2Process for producing silica particles suitable for use as filler for paperOJI PAPER CO·Filed 2001·Granted Feb 3, 2004·2 cites·10 claims
- 2854US5083212AApparatus and method for recording a color television signal on an optical discSONY CORP·Filed 1990·Granted Jan 21, 1992·15 cites·3 claims
- 2954US4430680AReciprocating member control mechanism in tape playerCLARION CO LTD·Filed 1981·Granted Feb 7, 1984·8 cites·2 claims
- 3054US2009316239A1Recording apparatus and recording methodSONY CORP·Filed 2009·Application pending·0 cites
- 3154US2009323481A1Drive apparatus and track jump methodSONY CORP·Filed 2009·Application pending·0 cites
- 3251US6264907B1Process for producing silica particles suitable for use as filler for paperOJI PAPER CO·Filed 1999·Granted Jul 24, 2001·13 cites·10 claims
- 3350US4209812ATape playerCLARION CO LTD·Filed 1978·Granted Jun 24, 1980·6 cites·7 claims
- 3447US7652968B2Method and apparatus for recording and/or reproducing a hologramSONY CORP·Filed 2005·Granted Jan 26, 2010·0 cites·10 claims
- 3547US4992652AFocus error detecting circuit for disk playerSONY CORP·Filed 1989·Granted Feb 12, 1991·6 cites·6 claims
- 3646US2008239222A1Substrate for liquid crystal display device and fabrication method thereofTPO DISPLAYS CORP·Filed 2008·Application pending·0 cites
- 3744US2007146838A1Hologram recording device, hologram reproductive device, hologram recording method, hologram reproduction method, and hologram recording mediumSONY CORP·Filed 2005·Application pending·0 cites
- 3843US4422589AFriction transmitting apparatusCLARION CO LTD·Filed 1981·Granted Dec 27, 1983·6 cites·1 claims
- 3941US5031056ATape tension mechanismCLARION CO LTD·Filed 1988·Granted Jul 9, 1991·5 cites·7 claims
- 4039US7006412B2Optical disk drive and optical disc recording methodSONY CORP·Filed 2002·Granted Feb 28, 2006·0 cites·5 claims
- 4139US4423847ATape reel driving mechanismCLARION CO LTD·Filed 1981·Granted Jan 3, 1984·3 cites·6 claims
- 4236US4450492AInterlocking gear control mechanism in magnetic tape recording/playing apparatusCLARION CO LTD·Filed 1981·Granted May 22, 1984·2 cites·3 claims
- 4335US4458276AMagnetic tape recording/reproducing apparatus with eject spring set by tape drive motorCLARION CO LTD·Filed 1981·Granted Jul 3, 1984·2 cites·3 claims
- 4430US4939602ACassette holder mechanismCLARION CO LTD·Filed 1987·Granted Jul 3, 1990·0 cites·11 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →