Inventor · disambiguated record
Hajime Sakata
Also filed as: SAKATA HAJIME
43 granted patents·5 pending applications·2,005 citations·filing 1983–2020
99Inventor score
Top patents by PatentIndex Score
48 records- 0199US6945652B2Projection display deviceCANON KK·Filed 2002·Granted Sep 20, 2005·134 cites·32 claims
- 0298US4729640ALiquid crystal light modulation deviceCANON KK·Filed 1985·Granted Mar 8, 1988·213 cites·36 claims
- 0396US4856869ADisplay element and observation apparatus having the sameCANON KK·Filed 1987·Granted Aug 15, 1989·114 cites·12 claims
- 0495US5148302AOptical modulation element having two-dimensional phase type diffraction gratingNAGANO AKIHIKO·Filed 1991·Granted Sep 15, 1992·170 cites·29 claims
- 0594US5013141ALiquid crystal light modulation deviceCANON KK·Filed 1989·Granted May 7, 1991·119 cites·4 claims
- 0693US5088097ASemiconductor laser element capable of changing emission wavelength, and method of driving the sameCANON KK·Filed 1990·Granted Feb 11, 1992·82 cites·29 claims
- 0790US6868214B1Optical waveguide, method of fabricating the waveguide, and optical interconnection device using the waveguideCANON KK·Filed 2000·Granted Mar 15, 2005·44 cites·25 claims
- 0890US6424418B2Surface plasmon resonance sensor apparatus using surface emitting laserCANON KK·Filed 1999·Granted Jul 23, 2002·108 cites·25 claims
- 0989US5299037ADiffraction grating type liquid crystal display device in viewfinderCANON KK·Filed 1993·Granted Mar 29, 1994·90 cites·24 claims
- 1088US7313156B2Control method of distributed Bragg reflection semiconductor laser, and image projecting apparatusCANON KK·Filed 2005·Granted Dec 25, 2007·9 cites·1 claims
- 1188US5140149AOptical apparatus using wavelength selective photocouplerCANON KK·Filed 1991·Granted Aug 18, 1992·80 cites·59 claims
- 1287US7512160B2Control method of distributed Bragg reflection semiconductor laser, and image projecting apparatusCANON KK·Filed 2007·Granted Mar 31, 2009·8 cites·10 claims
- 1387US5648978AOscillation polarization mode selective semiconductor laser, modulation method therefor and optical communication system using the sameCANON KK·Filed 1995·Granted Jul 15, 1997·73 cites·25 claims
- 1487US4850681AOptical modulation deviceCANON KK·Filed 1987·Granted Jul 25, 1989·71 cites·8 claims
- 1585US7411992B2Light wavelength converting apparatus, control method of the same, and image projecting apparatus using the sameCANON KK·Filed 2005·Granted Aug 12, 2008·9 cites·8 claims
- 1683US5349598AOptical semiconductor apparatus, a method of driving the same and an optical transmission system using the sameCANON KK·Filed 1993·Granted Sep 20, 1994·44 cites·22 claims
- 1782US6972737B2Image display apparatusCANON KK·Filed 2002·Granted Dec 6, 2005·18 cites·1 claims
- 1882US5233187AMulti-wavelength light detecting and/or emitting apparatuses having serially arranged grating directional couplersCANON KK·Filed 1992·Granted Aug 3, 1993·43 cites·31 claims
- 1981US5878066AOptical semiconductor apparatus driving method therefor light source apparatus and optical communication system using the sameCANON KK·Filed 1997·Granted Mar 2, 1999·50 cites·49 claims
- 2081US5220573AOptical apparatus using wavelength selective photocouplerCANON KK·Filed 1991·Granted Jun 15, 1993·42 cites·35 claims
- 2180US7809032B2Control method of distributed Bragg reflection semiconductor laser, and image projecting apparatusCANON KK·Filed 2009·Granted Oct 5, 2010·4 cites·4 claims
- 2280US6154302ALight deflection device and array thereofCANON KK·Filed 1998·Granted Nov 28, 2000·51 cites·22 claims
- 2380US5333216AOptical device used wavelength selective photocouplerCANON KK·Filed 1993·Granted Jul 26, 1994·41 cites·40 claims
- 2480US5131060AOptical waveguide modulator communications device and method of modulating light using sameCANON KK·Filed 1991·Granted Jul 14, 1992·54 cites·20 claims
- 2579US6072925AOptical integrated nodes, and optical communication systems and networks using the optical integrated nodesCANON KK·Filed 1995·Granted Jun 6, 2000·50 cites·70 claims
- 2677US6987785B2Harmonic generator, method for driving harmonic generator, image-displaying apparatus, image-forming apparatus, optical storage apparatus that employs harmonic generatorCANON KK·Filed 2003·Granted Jan 17, 2006·11 cites·1 claims
- 2777US5155736ASemiconductor laser element capable of changing emission wavelength, and method of driving the sameIBM·Filed 1991·Granted Oct 13, 1992·34 cites·10 claims
- 2876US6932516B2Surface optical device apparatus, method of fabricating the same, and apparatus using the sameCANON KK·Filed 2001·Granted Aug 23, 2005·17 cites·44 claims
- 2976US5701325ACompound semiconductor device and fabrication method of producing the compound semiconductor deviceCANON KK·Filed 1996·Granted Dec 23, 1997·42 cites·41 claims
- 3073US6639927B2Surface emitting semiconductor laser, and its fabrication methodCANON KK·Filed 2000·Granted Oct 28, 2003·11 cites·13 claims
- 3172US7039077B2Optical wavelength converting apparatus, and optical wavelength converting methodCANON KK·Filed 2003·Granted May 2, 2006·12 cites·10 claims
- 3271US5473448ADisplay device having a mesomorphic diffraction grating layer adjacent a polymer dispersed layerCANON KK·Filed 1995·Granted Dec 5, 1995·41 cites·24 claims
- 3370US9661993B2EndoscopeOLYMPUS CORP·Filed 2015·Granted May 30, 2017·2 cites·16 claims
- 3469US4926177AOptical analog-digital converter provided with a nonlinear optical element and an optical feedback system for the output lights of said elementCANON KK·Filed 1988·Granted May 15, 1990·27 cites·64 claims
- 3562US4707743AMethod and apparatus for image conversion with multiple exposures for filteringCANON KK·Filed 1986·Granted Nov 17, 1987·17 cites·15 claims
- 3657US6201644B1Light deflection device and array thereofCANON KK·Filed 1998·Granted Mar 13, 2001·19 cites·17 claims
- 3753US6919985B2Optical wavelength converting apparatus and optical wavelength converting methodCANON KK·Filed 2003·Granted Jul 19, 2005·4 cites·12 claims
- 3852US5222163AIntegrated type optical node and optical information system using the sameCANON KK·Filed 1991·Granted Jun 22, 1993·17 cites·20 claims
- 3951US2006044297A1Image display apparatusCANON KK·Filed 2005·Application pending·0 cites
- 4050US2020338305A1CatheterKANEKA CORP·Filed 2020·Application pending·0 cites
- 4148US2005226285A1Harmonic generator, method for driving harmonic generator, image-displaying apparatus, image-forming apparatus, optical storage apparatus that employs harmonic generatorCANON KK·Filed 2005·Application pending·0 cites
- 4247US2014155696A1EndoscopeOLYMPUS MEDICAL SYSTEMS CORP·Filed 2014·Application pending·0 cites
- 4346US5109444AIntegrated type optical node and optical information system using the sameCANON KK·Filed 1991·Granted Apr 28, 1992·13 cites·64 claims
- 4445US2013197309A1EndoscopeOLYMPUS MEDICAL SYSTEMS CORP·Filed 2013·Application pending·0 cites
- 4544US5002369ANonlinear optical element having electrodes on two side surfaces of nonlinear medium through insulating layersCANON KK·Filed 1988·Granted Mar 26, 1991·9 cites·15 claims
- 4638US4481233AProcess for producing solid-state color image pickup arrayCANON KK·Filed 1983·Granted Nov 6, 1984·4 cites·4 claims
- 4732US5287422AIntegrated type optical node and optical information system using the sameCANON KK·Filed 1993·Granted Feb 15, 1994·4 cites·34 claims
- 4823US8213247B2Memory device with test mechanismNAKA TOMOMI·Filed 2009·Granted Jul 3, 2012·0 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →