Inventor · disambiguated record
Keiji Sakamoto
Also filed as: SAKAMOTO KEIJI
96 granted patents·4 pending applications·1,346 citations·filing 1979–2021
99Inventor score
Top patents by PatentIndex Score
100 records- 0197US7390684B2Light emitting apparatus and method of manufacturing the sameNICHIA CORP·Filed 2006·Granted Jun 24, 2008·74 cites·16 claims
- 0296US8030665B2Nitride semiconductor device comprising bonded substrate and fabrication method of the sameNICHIA CORP·Filed 2008·Granted Oct 4, 2011·59 cites·16 claims
- 0393US8068294B2Lens barrel, image pickup device, and lens barrel manufacturing methodNAGAOKA EIICHI·Filed 2010·Granted Nov 29, 2011·10 cites·11 claims
- 0493US7920345B2Lens barrel supporting frame, lens retaining structure, lens barrel and cameraPANASONIC CORP·Filed 2010·Granted Apr 5, 2011·18 cites·8 claims
- 0593US7869702B2Image blur correcting device and cameraPANASONIC CORP·Filed 2006·Granted Jan 11, 2011·21 cites·10 claims
- 0693US7301175B2Light emitting apparatus and method of manufacturing the sameNICHIA CORP·Filed 2003·Granted Nov 27, 2007·80 cites·13 claims
- 0793US7105857B2Nitride semiconductor device comprising bonded substrate and fabrication method of the sameNICHIA CORP·Filed 2003·Granted Sep 12, 2006·78 cites·16 claims
- 0891US9508662B2Optical semiconductor deviceRENESAS ELECTRONICS CORP·Filed 2015·Granted Nov 29, 2016·9 cites·9 claims
- 0990US7872817B2Lens barrel, image pickup device, and lens barrel manufacturing methodPANASONIC CORP·Filed 2009·Granted Jan 18, 2011·8 cites·24 claims
- 1090US7746584B2Lens barrel supporting frame, lens retaining structure, lens barrel and cameraPANASONIC CORP·Filed 2008·Granted Jun 29, 2010·22 cites·15 claims
- 1189US7378334B2Nitride semiconductor device comprising bonded substrate and fabrication method of the sameNICHIA CORP·Filed 2006·Granted May 27, 2008·16 cites·15 claims
- 1287US8018522B2Lens barrel, image pickup device, lens barrel inspecting method, and lens barrel manufacturing methodPANASONIC CORP·Filed 2007·Granted Sep 13, 2011·6 cites·20 claims
- 1386US7787193B2Imaging device and cameraPANASONIC CORP·Filed 2006·Granted Aug 31, 2010·10 cites·18 claims
- 1485US7760996B2Image blur correction device and cameraPANASONIC CORP·Filed 2007·Granted Jul 20, 2010·10 cites·20 claims
- 1585US7040507B2Foam-type hair dye and foam-type hair dye discharge containerKAO CORP·Filed 2003·Granted May 9, 2006·36 cites·14 claims
- 1684US7397834B2Nitride semiconductor laser device and method of manufacturing the nitride semiconductor laser deviceNICHIA CORP·Filed 2004·Granted Jul 8, 2008·20 cites·13 claims
- 1784US4291265AProtective system for inverter circuit used in driving AC motorsFUJITSU FANUC LTD·Filed 1979·Granted Sep 22, 1981·33 cites·6 claims
- 1883US7885529B2Lens driving apparatus, imaging apparatus, and lens barrel and camera main body used for thisPANASONIC CORP·Filed 2010·Granted Feb 8, 2011·5 cites·4 claims
- 1983US4719400AMotor control apparatusFANUC LTD·Filed 1983·Granted Jan 12, 1988·31 cites·6 claims
- 2082US10295743B2Optical semiconductor device, and method for producing the sameRENESAS ELECTRONICS CORP·Filed 2015·Granted May 21, 2019·4 cites·13 claims
- 2182US7649923B2Method for manufacturing nitride semiconductor laser element, and nitride semiconductor laser elementNICHIA CORP·Filed 2007·Granted Jan 19, 2010·8 cites·21 claims
- 2279US8462256B2Lens barrel, image pickup device, and lens barrel manufacturing methodNAGAOKA EIICHI·Filed 2011·Granted Jun 11, 2013·2 cites·12 claims
- 2378US8062959B2Method of manufacturing semiconductor elementSAKAMOTO KEIJI·Filed 2008·Granted Nov 22, 2011·6 cites·20 claims
- 2478US6252367B1Servo controllerFANUC LTD·Filed 2000·Granted Jun 26, 2001·26 cites·8 claims
- 2576US7782549B2CameraPANASONIC CORP·Filed 2006·Granted Aug 24, 2010·4 cites·9 claims
- 2676US4943759AMultiple-articulated robot control apparatusFANUC LTD·Filed 1988·Granted Jul 24, 1990·35 cites·2 claims
- 2775US9917083B2Semiconductor device with an upper surface of a substrate at different levels and method of manufacturing the sameRENESAS ELECTRONICS CORP·Filed 2013·Granted Mar 13, 2018·4 cites·7 claims
- 2875US4680518AServomotor velocity control methodFANUC LTD·Filed 1986·Granted Jul 14, 1987·34 cites·2 claims
- 2974US8547478B2Lens barrel, image pickup device, and lens barrel manufacturing methodNAGAOKA EIICHI·Filed 2011·Granted Oct 1, 2013·1 cites·9 claims
- 3074US7796878B2Lens barrel and imaging device including lens barrelPANASONIC CORP·Filed 2006·Granted Sep 14, 2010·4 cites·11 claims
- 3174US4873476ARobot control apparatus for controlling a manipulator through a robot arm having a plurality of axesFANUC LTD·Filed 1987·Granted Oct 10, 1989·31 cites·5 claims
- 3273US8089093B2Nitride semiconductor device including different concentrations of impuritiesMATSUMURA HIROAKI·Filed 2005·Granted Jan 3, 2012·6 cites·22 claims
- 3373US4816734ASpeed control systemFANUC LTD·Filed 1986·Granted Mar 28, 1989·27 cites·3 claims
- 3473US4547719ASynchronous motor drive apparatusFANUC LTD·Filed 1983·Granted Oct 15, 1985·23 cites·8 claims
- 3572US6149289AAngled illumination tubeMATSUSHITA ELECTRIC WORKS LTD·Filed 1999·Granted Nov 21, 2000·40 cites·5 claims
- 3672US4458192AA.C. Motor drive apparatusFANUC LTD·Filed 1983·Granted Jul 3, 1984·22 cites·2 claims
- 3771US7483219B2Imaging apparatus and driving method of its imaging optical systemPANASONIC CORP·Filed 2006·Granted Jan 27, 2009·5 cites·11 claims
- 3869US9140329B2Transmission beltYAMADA MITSUHIRO·Filed 2012·Granted Sep 22, 2015·4 cites·10 claims
- 3969US7801435B2Lens driving apparatus, imaging apparatus, and lens barrel and camera main body used for thisPANASONIC CORP·Filed 2009·Granted Sep 21, 2010·3 cites·6 claims
- 4068US4741685AInjection drive apparatusFANUC LTD·Filed 1986·Granted May 3, 1988·25 cites·4 claims
- 4168US4611159AAC motor control systemFANUC LTD·Filed 1983·Granted Sep 9, 1986·18 cites·3 claims
- 4267US10162110B2Semiconductor device and method for manufacturing the sameRENESAS ELECTRONICS CORP·Filed 2016·Granted Dec 25, 2018·1 cites·20 claims
- 4367US5006770AServomotor velocity control apparatusFANUC LTD·Filed 1988·Granted Apr 9, 1991·27 cites·5 claims
- 4467US4916375AServomotor control apparatusFANUC LTD·Filed 1987·Granted Apr 10, 1990·24 cites·6 claims
- 4566US8810920B2Lens barrelIWASAKI SHINICHI·Filed 2011·Granted Aug 19, 2014·2 cites·10 claims
- 4666US4695780AServomotor velocity control systemFANUC LTD·Filed 1985·Granted Sep 22, 1987·23 cites·3 claims
- 4764US4623831ARotor position sensing apparatus for motorsFANUC LTD·Filed 1983·Granted Nov 18, 1986·15 cites·9 claims
- 4862US7620306B2Lens barrel and imaging devicePANASONIC CORP·Filed 2006·Granted Nov 17, 2009·2 cites·7 claims
- 4962US4703245AMethod and apparatus for controlling permanent magnet synchronous motor by using pulse width modulationFANUC LTD·Filed 1985·Granted Oct 27, 1987·17 cites·12 claims
- 5062US4477762AServomotor control method and apparatus thereforFUJITSU LTD·Filed 1983·Granted Oct 16, 1984·14 cites·6 claims
Showing the top 50 of 100 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →