Inventor · disambiguated record
Yasunori Arai
Also filed as: ARAI YASUNORI
45 granted patents·3 pending applications·702 citations·filing 1978–2021
98Inventor score
Top patents by PatentIndex Score
48 records- 0192US5123004ARecording and/or reproducing apparatus having a vertically movable disk chassis and arranged to prevent external forces from disrupting proper operationsNAKAMICHI CORP·Filed 1989·Granted Jun 16, 1992·50 cites·5 claims
- 0291US4899238ACartridge shutter actuating device in recording and/or reproducing apparatusNAKAMICHI CORP·Filed 1988·Granted Feb 6, 1990·33 cites·6 claims
- 0388US6454068B2Power transmitting system for four-wheel drive vehicleHONDA MOTOR CO LTD·Filed 2001·Granted Sep 24, 2002·49 cites·3 claims
- 0484US6515695B1Terminal and system for multimedia communicationsTOSHIBA KK·Filed 1999·Granted Feb 4, 2003·88 cites·7 claims
- 0582US5005093ARecording and/or reproducing apparatus with cartridge lock mechanismNAKAMICHI CORP·Filed 1989·Granted Apr 2, 1991·19 cites·9 claims
- 0681US4420248AVariable magnification copying deviceASAHI OPTICAL CO LTD·Filed 1981·Granted Dec 13, 1983·15 cites·9 claims
- 0778US6779642B2Lubricating structure of hydraulic clutchHONDA MOTOR CO LTD·Filed 2002·Granted Aug 24, 2004·14 cites·8 claims
- 0878US5412510AImaging optical system for compensating change of temperatureASAHI OPTICAL CO LTD·Filed 1992·Granted May 2, 1995·46 cites·28 claims
- 0976US5283599AApparatus for combining and projecting imagesASAHI OPTICAL CO LTD·Filed 1992·Granted Feb 1, 1994·40 cites·14 claims
- 1076US5163038ARecording and/or reproducing apparatus with vibration isolation meansNAKAMICHI CORP·Filed 1989·Granted Nov 10, 1992·21 cites·13 claims
- 1176US4322159AVariable magnification type copying machineASAHI OPTICAL CO LTD·Filed 1980·Granted Mar 30, 1982·15 cites·5 claims
- 1273US5278698AMagnifying projecting lensASAHI OPTICAL CO LTD·Filed 1993·Granted Jan 11, 1994·37 cites·33 claims
- 1372US6427817B1Lubrication structure of electro-magnetic clutchHONDA MOTOR CO LTD·Filed 2000·Granted Aug 6, 2002·11 cites·9 claims
- 1472US6330928B1Driving force control device for four-wheel drive vehicleHONDA MOTOR CO LTD·Filed 2000·Granted Dec 18, 2001·23 cites·4 claims
- 1570US7376330B2Encoded data recording apparatus and mobile terminalTOSHIBA KK·Filed 2001·Granted May 20, 2008·9 cites·4 claims
- 1667US4832465AZoom lens for use in copyingASAHI OPTICAL CO LTD·Filed 1986·Granted May 23, 1989·25 cites·35 claims
- 1766US5396487AStructure for holding an optical articleASAHI OPTICAL CO LTD·Filed 1991·Granted Mar 7, 1995·32 cites·5 claims
- 1865US5291241AOptical deviceASAHI OPTICAL CO LTD·Filed 1991·Granted Mar 1, 1994·15 cites·20 claims
- 1963US4468100AWide-angle photographic lensASAHI OPTICAL CO LTD·Filed 1982·Granted Aug 28, 1984·18 cites·3 claims
- 2063US4387979ACopying optical systemASAHI OPTICAL CO LTD·Filed 1981·Granted Jun 14, 1983·7 cites·8 claims
- 2157US5388003AProjection lens systemASAHI OPTICAL CO LTD·Filed 1994·Granted Feb 7, 1995·20 cites·6 claims
- 2257US4992896ACartridge shutter actuating device in recording and/or reproducing apparatusNAKAMICHI CORP·Filed 1989·Granted Feb 12, 1991·7 cites·13 claims
- 2357US2002143418A1Product cost variance analysis system and control method of the sameTOYOTA MOTOR CO LTD·Filed 2002·Application pending·0 cites
- 2455US5066987AShading board for copying apparatusASAHI OPTICAL CO LTD·Filed 1989·Granted Nov 19, 1991·9 cites·7 claims
- 2554US4400080ATwo-drum type copying machine having improved illumination efficiencyASAHI OPTICAL CO LTD·Filed 1981·Granted Aug 23, 1983·5 cites·8 claims
- 2652US8223832B2Resolution increasing apparatusHIRAI RYUSUKE·Filed 2009·Granted Jul 17, 2012·0 cites·20 claims
- 2750US4474462AVariable magnification type optical copier in which the copying size can be increased or decreasedASAHI OPTICAL CO LTD·Filed 1983·Granted Oct 2, 1984·7 cites·3 claims
- 2849US8503864B2Encoded data recording apparatus and mobile terminalOURA SEIJI·Filed 2008·Granted Aug 6, 2013·0 cites·12 claims
- 2949US4819035AColor separation optical reading apparatusASAHI OPTICAL CO LTD·Filed 1987·Granted Apr 4, 1989·9 cites·17 claims
- 3048US4781449AWide angle reading lens systemASAHI OPTICAL CO LTD·Filed 1987·Granted Nov 1, 1988·12 cites·7 claims
- 3146US4597641AVariable-power copying lensASAHI OPTICAL CO LTD·Filed 1984·Granted Jul 1, 1986·9 cites·6 claims
- 3246US4190324AAchromatic objective lensASAHI OPTICAL CO LTD·Filed 1978·Granted Feb 26, 1980·9 cites·1 claims
- 3343US4354756ACopying apparatusASAHI OPTICAL CO LTD·Filed 1981·Granted Oct 19, 1982·5 cites·9 claims
- 3442US11694750B2Memory system, memory device, and control method of memory system for generating information from a threshold voltageKIOXIA CORP·Filed 2021·Granted Jul 4, 2023·0 cites·19 claims
- 3542US2002002470A1Charging control system and terminalTOSHIBA KK·Filed 2001·Application pending·0 cites
- 3642US2001056474A1Multimedia providing system, multimedia conversion server, and multimedia terminalFiled 2001·Application pending·0 cites
- 3741US4447137ALarge-aperture telephoto lensASAHI OPTICAL CO LTD·Filed 1982·Granted May 8, 1984·7 cites·4 claims
- 3838US4618253AFocal position adjusting device for small variable-magnification type copying machine with zoom lensASAHI OPTICAL CO LTD·Filed 1985·Granted Oct 21, 1986·4 cites·4 claims
- 3937US4676632AVariable magnification copying optical systemASAHI OPTICAL CO LTD·Filed 1985·Granted Jun 30, 1987·2 cites·17 claims
- 4036US4974948AOptical device for varying magificationASAHI OPTICAL CO LTD·Filed 1989·Granted Dec 4, 1990·6 cites·36 claims
- 4135US4408841AVariable power lens system for copyingASAHI OPTICAL CO LTD·Filed 1981·Granted Oct 11, 1983·4 cites·14 claims
- 4234US4735496AFive-element copying zoom lens systemASAHI OPTICAL CO LTD·Filed 1987·Granted Apr 5, 1988·4 cites·15 claims
- 4334US4161350ATelescopic photographing lens systemASAHI OPTICAL CO LTD·Filed 1978·Granted Jul 17, 1979·4 cites·2 claims
- 4433US4333711AZoom lens for copyingASAHI OPTICAL CO LTD·Filed 1980·Granted Jun 8, 1982·3 cites·1 claims
- 4532US4840472AReflecting/refractive optical systemASAHI OPTICAL CO LTD·Filed 1988·Granted Jun 20, 1989·3 cites·5 claims
- 4632US4773746AReading lens systemASAHI OPTICAL CO LTD·Filed 1987·Granted Sep 27, 1988·3 cites·4 claims
- 4731USRE35396ECartridge shutter actuating device in .Iadd.a Magneto optical .Iaddend.recording and/or reproducing apparatusNAKAMICHI CORP·Filed 1993·Granted Dec 10, 1996·0 cites·2 claims
- 4829US5046507ATear production measuring sheet and package thereforSHOWA PHARM CHEM IND·Filed 1990·Granted Sep 10, 1991·3 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →