Inventor · disambiguated record
Koichi Maeyama
Also filed as: MAEYAMA KOICHI
33 granted patents·1 pending application·207 citations·filing 1988–2025
97Inventor score
Top patents by PatentIndex Score
34 records- 0194US12118168B2Pen state detection circuit, method, and device, and parameter supply deviceWACOM CO LTD·Filed 2022·Granted Oct 15, 2024·2 cites·18 claims
- 0293US12026326B2Pen state detection circuit and method, and input systemWACOM CO LTD·Filed 2023·Granted Jul 2, 2024·2 cites·9 claims
- 0391US6987606B2Image production apparatus, image display apparatus, image display method and optical modulation device adjustment apparatusSONY CORP·Filed 2005·Granted Jan 17, 2006·8 cites·1 claims
- 0483US12504854B2Pen state detection circuit, method, and device, and parameter supply deviceWACOM CO LTD·Filed 2024·Granted Dec 23, 2025·0 cites·20 claims
- 0582US12265668B2Pen state detection circuit and method, and input systemWACOM CO LTD·Filed 2024·Granted Apr 1, 2025·0 cites·8 claims
- 0681US12216846B2Pen state detection circuit, system, and methodWACOM CO LTD·Filed 2023·Granted Feb 4, 2025·0 cites·18 claims
- 0780US9538091B2Imaging apparatus, imaging signal processing circuit, imaging signal processing method, display apparatus, image signal processing circuit, and image signal processing methodJOLED INC·Filed 2014·Granted Jan 3, 2017·4 cites·12 claims
- 0877US11841999B2Pen state detection circuit, system, and methodWACOM CO LTD·Filed 2023·Granted Dec 12, 2023·0 cites·18 claims
- 0977US7072097B2Image production apparatus, image display apparatus, image display method and optical modulation device adjustment apparatusSONY CORP·Filed 2005·Granted Jul 4, 2006·2 cites·19 claims
- 1077US7042627B2Image production apparatus, image display apparatus, image display method and optical modulation device adjustment apparatusSONY CORP·Filed 2003·Granted May 9, 2006·11 cites·58 claims
- 1177US2025199628A1Pen state detection circuit and method, and input systemWACOM CO LTD·Filed 2025·Application pending·0 cites
- 1276US6992812B2Image production apparatus, image display apparatus, image display method and optical modulation device adjustment apparatusSONY CORP·Filed 2005·Granted Jan 31, 2006·5 cites·1 claims
- 1375US10354586B2Image signal processing circuit, image signal processing method, and display unit with pixel degradation correctionJOLED INC·Filed 2014·Granted Jul 16, 2019·2 cites·8 claims
- 1475USD386505SVideo camera for TV conference system and security useSONY CORP·Filed 1996·Granted Nov 18, 1997·20 cites·1 claims
- 1574US9288403B2Image processing circuit, image processing method, and display deviceSONY CORP·Filed 2014·Granted Mar 15, 2016·2 cites·26 claims
- 1674USD410016SCombined video tape recorder and cameraSONY CORP·Filed 1998·Granted May 18, 1999·19 cites·1 claims
- 1771US11604521B2Pen state detection circuit, system, and methodWACOM CO LTD·Filed 2021·Granted Mar 14, 2023·0 cites·21 claims
- 1871US9344761B2Video display system, external unit, and method of displaying videoJOLED INC·Filed 2014·Granted May 17, 2016·2 cites·6 claims
- 1970US9299291B2Display unit, driving method and electronic apparatusJOLED INC·Filed 2014·Granted Mar 29, 2016·1 cites·30 claims
- 2069USD531590STuner for a television receiverSONY CORP·Filed 2005·Granted Nov 7, 2006·17 cites·1 claims
- 2168USD669108SVideo cameraMAEYAMA KOICHI·Filed 2010·Granted Oct 16, 2012·18 cites·1 claims
- 2268USD381985SRadio receiverSONY CORP·Filed 1995·Granted Aug 5, 1997·15 cites·1 claims
- 2366US10115346B2Display device, driving method, and electronic apparatusJOLED INC·Filed 2015·Granted Oct 30, 2018·1 cites·19 claims
- 2466USD408784SAdaptor for video cameraSONY CORP·Filed 1997·Granted Apr 27, 1999·14 cites·1 claims
- 2565USD520462SRemote controllerSONY CORP·Filed 2005·Granted May 9, 2006·14 cites·1 claims
- 2660US7171026B2Steering device, method of authenticating a driver, and vehicleSONY CORP·Filed 2002·Granted Jan 30, 2007·14 cites·10 claims
- 2760US6999229B2Image production apparatus, image display apparatus, image display method and optical modulation device adjustment apparatusSONY CORP·Filed 2005·Granted Feb 14, 2006·1 cites·1 claims
- 2858USD646666SSpeakerSONY CORP·Filed 2010·Granted Oct 11, 2011·10 cites·1 claims
- 2952USD950625SVideo cameraSONY CORP·Filed 2018·Granted May 3, 2022·5 cites·1 claims
- 3047USD412862SInfrared detectorSONY CORP·Filed 1997·Granted Aug 17, 1999·6 cites·1 claims
- 3147USD314201SCombined camera and video tape recorderTOSHIBA KK·Filed 1988·Granted Jan 29, 1991·5 cites·1 claims
- 3244USD524253SRemote controllerSONY CORP·Filed 2005·Granted Jul 4, 2006·5 cites·1 claims
- 3338US9870738B2Display device, method of driving display device, and electronic apparatusJOLED INC·Filed 2015·Granted Jan 16, 2018·0 cites·13 claims
- 3434USD413133SCombined video tape recorder and cameraSONY CORP·Filed 1997·Granted Aug 24, 1999·2 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →