Inventor
FUJITSUKA HIROYUKI
JP27 patents
⚠️ This page may combine multiple inventors who share the name “FUJITSUKA HIROYUKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
WACOM CO LTD
17 patentsUS7778795B2Aug 17, 2010
Position indicator, variable capacitor, position input device and computer system
WACOM CO LTD46 citations92
US6937231B2Aug 30, 2005
Pen-shaped coordinate pointing device
WACOM CO LTD26 citations92
US6853369B2Feb 8, 2005
Variable capacity condenser and pointer
WACOM CO LTD31 citations92
US6801192B2Oct 5, 2004
Pen-shaped coordinate pointing device
WACOM CO LTD39 citations87
US10503281B2Dec 10, 2019
Position indicator
WACOM CO LTD8 citations84
US10427449B2Oct 1, 2019
Writing instrument and electronic pen body section
WACOM CO LTD7 citations84
US10589562B2Mar 17, 2020
Position pointer
WACOM CO LTD5 citations73
US9939931B2Apr 10, 2018
Position indicator and position detecting device
WACOM CO LTD2 citations73
US9151586B2Oct 6, 2015
Position indicator
WACOM CO LTD5 citations73
US8711130B2Apr 29, 2014
Position pointer, variable capacitor and inputting apparatus
WACOM CO LTD5 citations73
US11010002B2May 18, 2021
Electronic pen and cartridge for electronic pen
WACOM CO LTD3 citations70
US8884932B2Nov 11, 2014
Pen type coordinate indicator
WACOM CO LTD2 citations63
USRE41521EAug 17, 2010
Variable capacity condenser and pointer
WACOM CO LTD3 citations63
US11269464B2Mar 8, 2022
Electronic pen and cartridge for electronic pen
WACOM CO LTD0 citations59
US9377881B2Jun 28, 2016
Position indicator
WACOM CO LTD0 citations52
US9377880B2Jun 28, 2016
Position indicator
WACOM CO LTD1 citations52
US9261977B2Feb 16, 2016
Electronic circuit and position indicator
WACOM CO LTD0 citations42
FUKUSHIMA YASUYUKI
8 patentsUS8913041B2Dec 16, 2014
Position pointer, variable capacitor and inputting apparatus
FUKUSHIMA YASUYUKI55 citations94
US8674967B2Mar 18, 2014
Position indicator
FUKUSHIMA YASUYUKI27 citations92
US8525816B2Sep 3, 2013
Position pointer, variable capacitor and inputting apparatus
FUKUSHIMA YASUYUKI18 citations92
US8587565B2Nov 19, 2013
Position indicator, variable capacitor and input device
FUKUSHIMA YASUYUKI12 citations84
US8525530B2Sep 3, 2013
Variable capacitor and position indicator
FUKUSHIMA YASUYUKI9 citations84
US8304671B2Nov 6, 2012
Position indicator and coordinate input device
FUKUSHIMA YASUYUKI18 citations84
US8184109B2May 22, 2012
Coordinate input device, position indicator and variable capacitor
FUKUSHIMA YASUYUKI9 citations84
US8525531B2Sep 3, 2013
Variable capacitor, position indicator, and input device
FUKUSHIMA YASUYUKI0 citations41