Inventor · disambiguated record
Hiroyoshi Funato
Also filed as: FUNATO HIROYOSHI · KASAHARA NOBUO
42 granted patents·3 pending applications·1,033 citations·filing 1977–2013
98Inventor score
Top patents by PatentIndex Score
45 records- 0195US4987299ARotation quantity measuring method and systemRICOH KK·Filed 1989·Granted Jan 22, 1991·123 cites·20 claims
- 0294US9188674B2Laser radar deviceSUZUKI SHUICHI·Filed 2013·Granted Nov 17, 2015·34 cites·11 claims
- 0393US6072579AOptical pickup apparatus having improved holographic optical element and photodetectorRICOH KK·Filed 1999·Granted Jun 6, 2000·82 cites·20 claims
- 0493US4876680AMonolithic optical pick-up using an optical waveguideRICOH KK·Filed 1987·Granted Oct 24, 1989·54 cites·26 claims
- 0589US5481636AWavelength conversion elementRICOH KK·Filed 1994·Granted Jan 2, 1996·72 cites·14 claims
- 0689US5208800AMode splitter and magneto-optical signal detection deviceRICOH KK·Filed 1991·Granted May 4, 1993·104 cites·11 claims
- 0788US4154500AExposure optical system for electrostatic copying machine or the likeRICOH KK·Filed 1977·Granted May 15, 1979·17 cites·11 claims
- 0885US6618344B1Optical pickup apparatus having improved holographic optical element and photodetectorRICOH KK·Filed 2000·Granted Sep 9, 2003·16 cites·9 claims
- 0984US6876621B2Optical apparatus for recording/reproducing and reading/reproducing data on an optical recording medium, and method for using sameRICOH KK·Filed 2001·Granted Apr 5, 2005·16 cites·2 claims
- 1084US6822771B2Optical pickup unit and optical disk drive for accurate and stable information recording and reproductionRICOH KK·Filed 2002·Granted Nov 23, 2004·19 cites·32 claims
- 1184US5684779AOptical head with forward and reflected light beams propagating through a dual diffraction grating device along a common pathRICOH KK·Filed 1996·Granted Nov 4, 1997·42 cites·16 claims
- 1284US4149269AHolographic reading apparatus with an area identification and density reference scanRICOH KK·Filed 1977·Granted Apr 10, 1979·26 cites·7 claims
- 1383US8045249B2Optical scanning deviceRICOH CO LTD·Filed 2008·Granted Oct 25, 2011·7 cites·1 claims
- 1481US4637679AMultibeam photoscannerRICOH KK·Filed 1983·Granted Jan 20, 1987·37 cites·4 claims
- 1579US9983531B2Moving-member detecting device and image forming apparatusKUDO KOICHI·Filed 2013·Granted May 29, 2018·2 cites·10 claims
- 1679US7164532B2Diffraction grating, light source unit applying the same therein, and optical head device employing the sameRICOH KK·Filed 2003·Granted Jan 16, 2007·13 cites·15 claims
- 1779US4505537ALight scanning apparatusRICOH KK·Filed 1983·Granted Mar 19, 1985·34 cites·10 claims
- 1878US9304228B2Object detection apparatus with detection based on reflected light or scattered light via an imaging unitNAKAMURA TADASHI·Filed 2013·Granted Apr 5, 2016·4 cites·8 claims
- 1976US6754162B2Optical pickup method, optical pickup device, and optical information processing apparatus adapted with spherical aberration correction for sub-spot tracking controlRICOH KK·Filed 2001·Granted Jun 22, 2004·11 cites·35 claims
- 2076US5175642ALight source unit capable of changing size of light beam spot and optical scanning image recording apparatus using the sameRICOH KK·Filed 1990·Granted Dec 29, 1992·24 cites·26 claims
- 2170US5333231AWavelength conversion elementRICOH KK·Filed 1992·Granted Jul 26, 1994·29 cites·17 claims
- 2270US4761046ALaser beam recording methodRICOH KK·Filed 1986·Granted Aug 2, 1988·24 cites·27 claims
- 2367US4971414AOptical information record/read apparatusRICOH KK·Filed 1989·Granted Nov 20, 1990·25 cites·22 claims
- 2464US5119452AHigh efficiency prism coupling device and method for producing the sameRICOH KK·Filed 1990·Granted Jun 2, 1992·28 cites·7 claims
- 2564US4712852AHologram disk for deflecting a light beamRICOH KK·Filed 1986·Granted Dec 15, 1987·27 cites·1 claims
- 2664US4355858AHologram lensRICOH KK·Filed 1979·Granted Oct 26, 1982·18 cites·2 claims
- 2762US7242839B2Optical delay elementTOSHIHIKO BABA·Filed 2005·Granted Jul 10, 2007·3 cites·19 claims
- 2862US5355220AOptical movement measuring method and apparatus using interference fringes generated by overlapping spots of diffracted lights of different orders of diffraction from a line sourceRICOH KK·Filed 1992·Granted Oct 11, 1994·19 cites·64 claims
- 2960US8587774B2Velocity detecting device and multi-color image forming apparatusFUNATO HIROYOSHI·Filed 2010·Granted Nov 19, 2013·3 cites·20 claims
- 3059US5124835AOptical scanning apparatusRICOH KK·Filed 1990·Granted Jun 23, 1992·19 cites·9 claims
- 3156US5031978ARecording optical systemRICOH KK·Filed 1990·Granted Jul 16, 1991·16 cites·9 claims
- 3255US8373736B2Optical scanning device and image forming apparatusRICOH CO LTD·Filed 2009·Granted Feb 12, 2013·1 cites·14 claims
- 3354US4678263APhoto scanner deviceRICOH KK·Filed 1985·Granted Jul 7, 1987·16 cites·2 claims
- 3453US5195071AFocus detecting optical headRICOH KK·Filed 1990·Granted Mar 16, 1993·9 cites·4 claims
- 3552US7177258B2Optical pickup apparatus, optical data recording/reproducing apparatus, and optical data recording/reproducing methodRICOH KK·Filed 2004·Granted Feb 13, 2007·1 cites·18 claims
- 3650US5402154AOptical recording system capable of changing the beam sizeRICOH KK·Filed 1992·Granted Mar 28, 1995·16 cites·17 claims
- 3746US4470659ALight beam scanning apparatusRICOH KK·Filed 1981·Granted Sep 11, 1984·9 cites·6 claims
- 3846US2004017760A1Optical pickup apparatus having improved holographic optical element and photodetectorFiled 2003·Application pending·0 cites
- 3944US4348080AOptical scanning apparatus and methodRICOH KK·Filed 1979·Granted Sep 7, 1982·8 cites·1 claims
- 4044US2006055993A1Hologram element, production method thereof, and optical headerKOBAYASHI MASANORI·Filed 2005·Application pending·0 cites
- 4143US4623791AOptical scanning deviceRICOH KK·Filed 1985·Granted Nov 18, 1986·9 cites·6 claims
- 4242US2004213133A1Diffraction grating, method of producing it, method of duplicating it, optical head device employing it and optical disk drive apparatus employing the optical head deviceFiled 2004·Application pending·0 cites
- 4341US4159166ABeam splitting lens assemblyRICOH KK·Filed 1977·Granted Jun 26, 1979·7 cites·3 claims
- 4437US4325601AOptical scanning deviceRICOH KK·Filed 1980·Granted Apr 20, 1982·5 cites·7 claims
- 4533US5079415AApparatus for converting optical information into electrical information signal, information storage element and method for storing information in the information storage elementRICOH KK·Filed 1990·Granted Jan 7, 1992·4 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →