Inventor · disambiguated record
Keiji Kataoka
Also filed as: KATAOKA KEIJI
53 granted patents·1 pending application·1,085 citations·filing 1975–2011
99Inventor score
Files withHITACHI LTD29HITACHI KOKI KK12RICOH PRINTING SYS LTD5FINE MACHINE KATAOKA CO LTD4HITACHI PRINTING SOLUTIONS LTD2
Top patents by PatentIndex Score
54 records- 0196US4253102AOptical recording apparatusHITACHI LTD·Filed 1979·Granted Feb 24, 1981·57 cites·7 claims
- 0295US5959943AInformation recording medium with clock information thereinHITACHI LTD·Filed 1997·Granted Sep 28, 1999·69 cites·2 claims
- 0394US5005969AOptical projection apparatus with the function of controlling laser coherencyHITACHI LTD·Filed 1989·Granted Apr 9, 1991·74 cites·9 claims
- 0489US4640573ALens-on-disc type optical scanning apparatusHITACHI LTD·Filed 1983·Granted Feb 3, 1987·56 cites·7 claims
- 0588US5574597ALight scanner and multi-beam generator using the sameHITACHI KOKI KK·Filed 1993·Granted Nov 12, 1996·79 cites·5 claims
- 0686US9623447B2Washing apparatus comprising a capsule-shaped washing chamberKATAOKA KEIJI·Filed 2011·Granted Apr 18, 2017·13 cites·2 claims
- 0786US4561717AOptical system for information processingHITACHI LTD·Filed 1981·Granted Dec 31, 1985·40 cites·6 claims
- 0886US4274101ALaser recorder with piezoelectric bimorph focal length vibratorHITACHI LTD·Filed 1979·Granted Jun 16, 1981·25 cites·4 claims
- 0981US4656618AOptical information recording and reproducing apparatusHITACHI LTD·Filed 1984·Granted Apr 7, 1987·22 cites·20 claims
- 1081US4021606AHologram apparatusHITACHI LTD·Filed 1975·Granted May 3, 1977·33 cites·10 claims
- 1180US5142140AApparatus for counting particles suspended in a fluid having a polarizing beam splitterHITACHI LTD·Filed 1990·Granted Aug 25, 1992·50 cites·20 claims
- 1280US5134426AOptical device for generating pattern having uniform light intensity distributionHITACHI LTD·Filed 1990·Granted Jul 28, 1992·29 cites·11 claims
- 1380US4644160ASystem for holding plural light beams in predetermined relative positionsHITACHI LTD·Filed 1984·Granted Feb 17, 1987·34 cites·12 claims
- 1478US7477813B2Multi-beam light source, method for manufacturing the same, light scanning unit using the same, and image forming apparatus using the sameRICOH PRINTING SYS LTD·Filed 2007·Granted Jan 13, 2009·9 cites·8 claims
- 1577US5170383AMagneto-optical data recording systemHITACHI LTD·Filed 1989·Granted Dec 8, 1992·13 cites·23 claims
- 1676US5296995AMethod of magnetically recording and reading data, magnetic recording medium, its production method and magnetic recording apparatusHITACHI LTD·Filed 1993·Granted Mar 22, 1994·58 cites·23 claims
- 1775US5631762AMulti-beam generating element and optical printing apparatus therewithHITACHI KOKI KK·Filed 1994·Granted May 20, 1997·38 cites·7 claims
- 1875US5444567ALight control deviceHITACHI KOKI KK·Filed 1992·Granted Aug 22, 1995·39 cites·13 claims
- 1975US4840447ALight modulating device arrayHITACHI LTD·Filed 1987·Granted Jun 20, 1989·34 cites·10 claims
- 2075US4779943AOptical system for semiconductor laser and optical information processing equipment utilizing the sameHITACHI LTD·Filed 1984·Granted Oct 25, 1988·28 cites·5 claims
- 2174US7347629B2Semiconductor laser module for optical scannerRICOH PRINTING SYS LTD·Filed 2006·Granted Mar 25, 2008·7 cites·23 claims
- 2274US4857744AOptical projection printing apparatus wherein wafer mark has a grating pitch in the sagittal plane of the first optical systemHITACHI LTD·Filed 1988·Granted Aug 15, 1989·22 cites·12 claims
- 2372US4621892ALight scanning device using lensesHITACHI LTD·Filed 1983·Granted Nov 11, 1986·24 cites·16 claims
- 2469US6621511B2Optical recording apparatus including light-transmitting diffraction grating and multi-channel acousto-optic modulatorHITACHI PRINTING SOLUTIONS LTD·Filed 2001·Granted Sep 16, 2003·12 cites·2 claims
- 2568US7628867B2Washing device and its work conveying methodFINE MACHINE KATAOKA CO LTD·Filed 2005·Granted Dec 8, 2009·2 cites·3 claims
- 2667US4759628AWavelength scanning interferometry and interferometer employing laser diodeHITACHI LTD·Filed 1986·Granted Jul 26, 1988·25 cites·11 claims
- 2766US7542642B2Multi-beam generating device and optical recording device using the sameRICOH PRINTING SYS LTD·Filed 2007·Granted Jun 2, 2009·4 cites·5 claims
- 2864US7287535B2Work washing apparatusFINE MACHINE KATAOKA CO LTD·Filed 2003·Granted Oct 30, 2007·6 cites·1 claims
- 2964US7287918B2Semiconductor laser moduleRICOH PRINTING SYS LTD·Filed 2005·Granted Oct 30, 2007·3 cites·18 claims
- 3064US5737133AModule for optical fiber receptacle used in a scanning deviceHITACHI KOKI KK·Filed 1996·Granted Apr 7, 1998·29 cites·6 claims
- 3161US4929044AOptical pickup using waveguideHITACHI LTD·Filed 1988·Granted May 29, 1990·11 cites·30 claims
- 3259US5473581AMagneto-optical data recording system continuously irradiating optical pulsersHITACHI LTD·Filed 1992·Granted Dec 5, 1995·7 cites·15 claims
- 3359US4689479AOptical focussing and tracking system using a polarization prism for dividing the reflected beamHITACHI LTD·Filed 1984·Granted Aug 25, 1987·9 cites·15 claims
- 3456US7290551B2Washing device and its work conveying methodFINE MACHINE KATAOKA CO LTD·Filed 2002·Granted Nov 6, 2007·4 cites·9 claims
- 3555US7806987B2Washing device and its work conveying methodFINE MACHINE KATAOKA CO LTD·Filed 2007·Granted Oct 5, 2010·0 cites·1 claims
- 3655US4802153AOptical information processor and method for accessing rotating record carrier utilizing acousto-optic light deflector including holding a focus error signal during track jumpingHITACHI LTD·Filed 1986·Granted Jan 31, 1989·9 cites·20 claims
- 3754US6753991B2Optical recording apparatusHITACHI PRINTING SOLUTIONS LTD·Filed 2003·Granted Jun 22, 2004·4 cites·9 claims
- 3853US4688880AHologram lensHITACHI LTD·Filed 1984·Granted Aug 25, 1987·11 cites·12 claims
- 3950US4235507AOptical system to condense light from a semiconductor laser into a circular spotHITACHI LTD·Filed 1978·Granted Nov 25, 1980·10 cites·6 claims
- 4049US5402409AOptical recording apparatus and method for adding information in a sub-scanning direction and for deflecting a light beam to an optimum sub-scanning recording positionHITACHI KOKI KK·Filed 1993·Granted Mar 28, 1995·15 cites·7 claims
- 4147US5726955AMagneto optical recording medium apparatus and method utilizing light pulse magnetic modulation recordingHITACHI LTD·Filed 1996·Granted Mar 10, 1998·4 cites·9 claims
- 4244US5886958AInformation recording apparatus and method for modulated magneto-optical recording mediumHITACHI LTD·Filed 1997·Granted Mar 23, 1999·3 cites·10 claims
- 4343US5818496AExposure device of electrophotographic apparatus with optical path position deciding deviceHITACHI KOKI KK·Filed 1995·Granted Oct 6, 1998·11 cites·4 claims
- 4441US5995130ALaser beam scanning apparatus and method providing controllable print densityHITACHI KOKI KK·Filed 1996·Granted Nov 30, 1999·8 cites·4 claims
- 4541US5325172AOptical system for analyzing samples separated by a centrifugal separatorHITACHI KOKI KK·Filed 1993·Granted Jun 28, 1994·11 cites·6 claims
- 4640US5218377ALaser printing device with control of oscillation amplitudeHITACHI KOKI KK·Filed 1991·Granted Jun 8, 1993·6 cites·3 claims
- 4739US5579292AMagneto-optical data recording apparatus using a sample-servo system for applying heating pulses to record dataHITACHI LTD·Filed 1995·Granted Nov 26, 1996·2 cites·64 claims
- 4839US4620768AOptical scanning systemHITACHI LTD·Filed 1983·Granted Nov 4, 1986·7 cites·9 claims
- 4939US2011005555A1Work washing apparatusKATAOKA KEIJI·Filed 2010·Application pending·0 cites
- 5038US5719832AOptical recording apparatus using optical fibers for guiding laser beamsHITACHI KOKI KK·Filed 1996·Granted Feb 17, 1998·8 cites·7 claims
Showing the top 50 of 54 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →