Inventor · disambiguated record
Akio Yoshikawa
Also filed as: YOSHIKAWA AKIO
47 granted patents·6 pending applications·714 citations·filing 1977–2024
98Inventor score
Files withCANON KK21MATSUSHITA ELECTRIC INDUSTRIAL CO LTD17MATSUSHITA ELECTRONICS CORP9VICTOR COMPANY OF JAPAN2A&D CO LTD1
Top patents by PatentIndex Score
53 records- 0193US11430487B2Display control apparatus and control method for controlling the sameCANON KK·Filed 2021·Granted Aug 30, 2022·3 cites·18 claims
- 0293US6728034B1Diffractive optical element that polarizes light and an optical pickup using the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Apr 27, 2004·40 cites·15 claims
- 0390US6597642B1Photodetector unit, and optical pickup, optical reproduction apparatus, and optical recording apparatus equipped with the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Jul 22, 2003·33 cites·40 claims
- 0489US6501156B1Lead frame which includes a die pad, a support lead, and inner leadsMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Dec 31, 2002·70 cites·23 claims
- 0588US5748658ASemiconductor laser device and optical pickup headMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted May 5, 1998·99 cites·33 claims
- 0688US5479426ASemiconductor laser device with integrated reflector on a (511) tilted lattice plane silicon substrateMATSUSHITA ELECTRONICS CORP·Filed 1994·Granted Dec 26, 1995·55 cites·13 claims
- 0787US6534794B1Semiconductor light-emitting unit, optical apparatus and optical disk system having heat sinking means and a heating element incorporated with the mounting systemMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Mar 18, 2003·29 cites·11 claims
- 0882US9979881B2Imaging control apparatus and method for controlling the sameCANON KK·Filed 2016·Granted May 22, 2018·3 cites·28 claims
- 0981US6501601B1Optical device with diffraction grating having plural grating regionsMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Dec 31, 2002·12 cites·13 claims
- 1080US9489167B2Display control apparatus and control method thereforCANON KK·Filed 2014·Granted Nov 8, 2016·4 cites·16 claims
- 1177US11509829B2Electronic apparatus and method for controlling the same and storage mediumCANON KK·Filed 2019·Granted Nov 22, 2022·2 cites·9 claims
- 1275US10158800B2Display control device and control method thereforCANON KK·Filed 2015·Granted Dec 18, 2018·2 cites·22 claims
- 1375US9405370B2Electronic device and control method thereofCANON KK·Filed 2014·Granted Aug 2, 2016·3 cites·15 claims
- 1475US6292500B1Semiconductor laser deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Sep 18, 2001·53 cites·10 claims
- 1574US7064898B1Optoelectronic deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Jun 20, 2006·11 cites·16 claims
- 1671US6822989B1Semiconductor laser and a manufacturing method for the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Nov 23, 2004·12 cites·38 claims
- 1770US10205872B2Display control apparatus and method for controlling the sameCANON KK·Filed 2016·Granted Feb 12, 2019·1 cites·32 claims
- 1869US5793785ASemiconductor laser deviceMATSUSHITA ELECTRONICS CORP·Filed 1995·Granted Aug 11, 1998·31 cites·6 claims
- 1967US6728035B2Optical device with diffraction grating having plural grating regionsMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted Apr 27, 2004·8 cites·11 claims
- 2066US4719633ABuried stripe-structure semiconductor laserMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1985·Granted Jan 12, 1988·13 cites·3 claims
- 2164US5349463AOptical radio repeater with signal quality detectionVICTOR COMPANY OF JAPAN·Filed 1993·Granted Sep 20, 1994·39 cites·16 claims
- 2263US9778686B2Electronic apparatus, its control method and program, and storage mediumCANON KK·Filed 2014·Granted Oct 3, 2017·1 cites·25 claims
- 2362US5617435ALasing system with wavelength-conversion waveguideMATSUSHITA ELECTRONICS CORP·Filed 1995·Granted Apr 1, 1997·26 cites·11 claims
- 2461US6614743B1Semiconductor laser deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Sep 2, 2003·5 cites·16 claims
- 2561US6192020B1Semiconductor laser deviceMATSUSHITA ELECTRONICS CORP·Filed 1998·Granted Feb 20, 2001·17 cites·21 claims
- 2661US2025085506A1Image capturing apparatus, control method therefor, and storage medium storing control program thereforCANON KK·Filed 2024·Application pending·0 cites
- 2760US6473248B1Method for manufacturing an optical pickupMATSUSHITA ELECTRONICS IND CO·Filed 2000·Granted Oct 29, 2002·9 cites·11 claims
- 2859US12439016B2Display control device, display control method, and non-transitory computer readable medium for displaying captured image including two image regionsCANON KK·Filed 2023·Granted Oct 7, 2025·0 cites·17 claims
- 2959US12047672B2Display control apparatus, control method therefor, and storage mediumCANON KK·Filed 2022·Granted Jul 23, 2024·0 cites·19 claims
- 3059US6631148B1Semiconductor laser and a manufacturing method for the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Oct 7, 2003·5 cites·11 claims
- 3158US6735024B2Optical pickup with improved optical propertiesMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted May 11, 2004·7 cites·31 claims
- 3257US5729519AOptical head including a semiconductor laser having a non-scatter area to diffuse incident light beamsMATSUSHITA ELECTRONICS CORP·Filed 1996·Granted Mar 17, 1998·19 cites·4 claims
- 3356US2024078070A1Video distribution device, display control device, video distribution method, display control method, and non-transitory computer readable mediumCANON KK·Filed 2023·Application pending·0 cites
- 3455US2019014257A1Display control apparatus and method for controlling the sameCANON KK·Filed 2018·Application pending·0 cites
- 3554US5481524ADiffraction element and optical pick-up assemblyMATSUSHITA ELECTRONICS CORP·Filed 1993·Granted Jan 2, 1996·9 cites·9 claims
- 3652US11520400B2Electronic apparatus and method for controlling the sameCANON KK·Filed 2020·Granted Dec 6, 2022·0 cites·18 claims
- 3752US5751756ASemiconductor laser device for use as a light source of an optical disk or the likeMATSUSHITA ELECTRONICS CORP·Filed 1996·Granted May 12, 1998·17 cites·28 claims
- 3852US5539767ASemiconductor laser deviceMATSUSHIA ELECTRONICS CORP·Filed 1994·Granted Jul 23, 1996·22 cites·5 claims
- 3951US5478438AMethod of etching semiconductor substrateMATSUSHITA ELECTRONICS CORP·Filed 1993·Granted Dec 26, 1995·20 cites·11 claims
- 4049US10750095B2Display control apparatus and method for controlling the sameCANON KK·Filed 2018·Granted Aug 18, 2020·0 cites·21 claims
- 4148US11950030B2Electronic apparatus and method of controlling the same, and recording mediumCANON KK·Filed 2022·Granted Apr 2, 2024·0 cites·14 claims
- 4247US10778898B2Imaging control apparatus for controlling to display focus information and control method for controlling imaging control apparatusCANON KK·Filed 2019·Granted Sep 15, 2020·0 cites·23 claims
- 4346US12389082B2Electronic device, control method of electronic device, and non-transitory computer readable storage mediumCANON KK·Filed 2022·Granted Aug 12, 2025·0 cites·16 claims
- 4446US6947213B2Diffractive optical element that polarizes light and an optical pickup using the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2004·Granted Sep 20, 2005·0 cites·9 claims
- 4544US11336829B2Display control apparatus capable of performing display control for display apparatus with variable orientation, control method therefor, and storage mediumCANON KK·Filed 2021·Granted May 17, 2022·0 cites·23 claims
- 4644US5517479AOptical head including a semiconductor laser having a non-scatter incident areaMATSUSHITA ELECTRONICS CORP·Filed 1994·Granted May 14, 1996·11 cites·16 claims
- 4744US4122770ASeries printerYAMATO SCALE CO LTD·Filed 1977·Granted Oct 31, 1978·6 cites·3 claims
- 4844US2003053211A1Optical deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Application pending·0 cites
- 4944US2015029224A1Imaging apparatus, control method and program of imaging apparatus, and recording mediumCANON KK·Filed 2014·Application pending·0 cites
- 5039US5289306ARepeater systemVICTOR COMPANY OF JAPAN·Filed 1992·Granted Feb 22, 1994·12 cites·16 claims
Showing the top 50 of 53 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →