Inventor
KATSURAHIRA YUJI
JP58 patents
⚠️ This page may combine multiple inventors who share the name “KATSURAHIRA YUJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
WACOM CO LTD
42 patentsUS5600105AFeb 4, 1997
Position detecting device and position pointing device therefor
WACOM CO LTD186 citations99
US7474300B2Jan 6, 2009
Position detecting apparatus and position pointer
WACOM CO LTD69 citations98
US5898136AApr 27, 1999
Position detecting apparatus having a tablet and a position pointing device
WACOM CO LTD104 citations98
US5679930AOct 21, 1997
Position pointing device including a controller for an AC field emitter in accordance with a binary code
WACOM CO LTD134 citations98
US5672852ASep 30, 1997
Position pointing device including a memory and a position detecting device coupled by AC fields to the pointing device
WACOM CO LTD134 citations98
US5661269AAug 26, 1997
Position pointing device having resonant circuit with sequentially changed characteristics and combination thereof with position detecting device
WACOM CO LTD125 citations98
US6005555ADec 21, 1999
Position detecting apparatus and method for detecting position pointing device
WACOM CO LTD142 citations97
US5706000AJan 6, 1998
Position detecting device and position pointing device therefor
WACOM CO LTD61 citations96
US5682019AOct 28, 1997
Position detecting apparatus and position pointing device including elapsed time period build up detector
WACOM CO LTD62 citations96
US5644108AJul 1, 1997
Position detection device utilizing electromagnetic induction
WACOM CO LTD85 citations96
US5629500AMay 13, 1997
Position pointing device, system and method employing AC field
WACOM CO LTD60 citations96
US6239789B1May 29, 2001
Position detecting method and apparatus for detecting a plurality of position indicators
WACOM CO LTD60 citations95
US5977959ANov 2, 1999
Position pointing device
WACOM CO LTD53 citations95
US10809817B2Oct 20, 2020
Position detection device and position indicator
WACOM CO LTD18 citations94
US9459726B2Oct 4, 2016
Position detector and position indicator
WACOM CO LTD24 citations94
US8368669B2Feb 5, 2013
Position detecting device and computer including the same
WACOM CO LTD22 citations93
US6930674B2Aug 16, 2005
Position detector and position indicator therefor
WACOM CO LTD23 citations93
US6810351B2Oct 26, 2004
Position detector
WACOM CO LTD36 citations93
US5714984AFeb 3, 1998
Position detecting device and position pointing device therefor
WACOM CO LTD53 citations93
US4709209ANov 24, 1987
Magnetostrictive vibration wave position detecting apparatus with variable threshold detecting valves
WACOM CO LTD45 citations93
US8373683B2Feb 12, 2013
Position input device and computer system
WACOM CO LTD21 citations92
US5969296AOct 19, 1999
Position pointing mechanism and method for position detecting apparatus
WACOM CO LTD37 citations92
US6278440B1Aug 21, 2001
Coordinate input apparatus and position-pointing device
WACOM CO LTD31 citations90
US10768723B2Sep 8, 2020
Electronic pen and electronic pen main body
WACOM CO LTD8 citations84
US10296039B2May 21, 2019
Analog circuit, position indicator, and system
WACOM CO LTD13 citations84
US7149647B2Dec 12, 2006
Position pointing device
WACOM CO LTD19 citations84
US11216087B2Jan 4, 2022
Position detecting device and position indicator thereof
WACOM CO LTD2 citations73
US10795491B2Oct 6, 2020
Position detecting device that selects electrodes having different intervals therebetween while different signals are detected
WACOM CO LTD2 citations73
US9600117B2Mar 21, 2017
Position detector and position indicator
WACOM CO LTD2 citations73
US9600096B2Mar 21, 2017
Position detecting device and position detecting method
WACOM CO LTD6 citations73
US9046978B2Jun 2, 2015
Position detecting device
WACOM CO LTD5 citations73
US12386466B2Aug 12, 2025
Sensor controller and stylus
WACOM CO LTD0 citations63
US12271566B2Apr 8, 2025
Position detection device, and position detection method based on electromagnetic inductive coupling and capacitive coupling
WACOM CO LTD0 citations63
US12067198B2Aug 20, 2024
Sensor controller and stylus
WACOM CO LTD0 citations63
US12008206B2Jun 11, 2024
Position detection device, and position detection method based on electromagnetic inductive coupling and capacitive coupling
WACOM CO LTD0 citations63
US11714511B2Aug 1, 2023
Sensor controller and stylus
WACOM CO LTD0 citations63
US11644936B2May 9, 2023
Position detection device, and position detection method based on electromagnetic inductive coupling and capacitive coupling
WACOM CO LTD0 citations63
US11262875B2Mar 1, 2022
Position detection device and position indicator
WACOM CO LTD0 citations63
US11249610B2Feb 15, 2022
Position detection device, and position detection method based on electromagnetic inductive coupling and capacitive coupling
WACOM CO LTD0 citations63
US10379642B1Aug 13, 2019
Positioning indicating module and stylus pen
WACOM CO LTD1 citations63
US10331243B2Jun 25, 2019
Position indicating module and stylus pen
WACOM CO LTD1 citations63
US11314365B2Apr 26, 2022
Electronic pen and electronic pen main body
WACOM CO LTD0 citations62
KATSURAHIRA YUJI
8 patentsUS8154525B2Apr 10, 2012
Position detecting device and position detecting method
KATSURAHIRA YUJI39 citations94
US8982044B2Mar 17, 2015
Position detector and position indicator
KATSURAHIRA YUJI22 citations92
US8253702B2Aug 28, 2012
Position detecting apparatus and position pointer
KATSURAHIRA YUJI28 citations92
US8094140B2Jan 10, 2012
Position input device and computer system
KATSURAHIRA YUJI23 citations92
US8089008B2Jan 3, 2012
Position indicator
KATSURAHIRA YUJI21 citations92
US8063322B2Nov 22, 2011
Position indicator and coordinate input device
KATSURAHIRA YUJI34 citations92
US8212550B2Jul 3, 2012
Position indicator, circuit component and input device
KATSURAHIRA YUJI45 citations90
US8847928B2Sep 30, 2014
Coil, position indicator, position detecting device, and coil winding method
KATSURAHIRA YUJI6 citations73
Showing the top 50 of 58 patents by PatentIndex Score.