Inventor · disambiguated record
Ryoji Kamiyama
Also filed as: KAMIYAMA Ryoji
32 granted patents·111 citations·filing 2014–2023
96Inventor score
Files withWACOM CO LTD32
Top patents by PatentIndex Score
32 records- 0194US11385725B2Electronic erasing device and writing information processing systemWACOM CO LTD·Filed 2021·Granted Jul 12, 2022·5 cites·11 claims
- 0292US12153744B2Electronic pen and electronic pen main bodyWACOM CO LTD·Filed 2023·Granted Nov 26, 2024·2 cites·15 claims
- 0389US10739872B2Electronic pen and electronic pen main body unitWACOM CO LTD·Filed 2018·Granted Aug 11, 2020·3 cites·18 claims
- 0487US9513719B2Pen pressure detecting module and position indicatorWACOM CO LTD·Filed 2014·Granted Dec 6, 2016·11 cites·21 claims
- 0586US12001618B2Knock-type electronic pen including first and second position indicators located at different ends of a tubular casingWACOM CO LTD·Filed 2022·Granted Jun 4, 2024·1 cites·15 claims
- 0684USD897341SCartridge for an electronic penWACOM CO LTD·Filed 2018·Granted Sep 29, 2020·22 cites·1 claims
- 0782US10459539B2Electronic pen and electronic pen main bodyWACOM CO LTD·Filed 2017·Granted Oct 29, 2019·3 cites·16 claims
- 0880USD1001130SCartridge for an electronic penWACOM CO LTD·Filed 2022·Granted Oct 10, 2023·5 cites·1 claims
- 0980USD978243SCartridge for an electronic penWACOM CO LTD·Filed 2020·Granted Feb 14, 2023·6 cites·1 claims
- 1080USD966268SCartridge for an electronic penWACOM CO LTD·Filed 2020·Granted Oct 11, 2022·6 cites·1 claims
- 1180US10768720B2Electronic penWACOM CO LTD·Filed 2019·Granted Sep 8, 2020·2 cites·20 claims
- 1280US10474253B2Electronic pen including a pressing member having an extension that extends along an outer wall of a writing-pressure detectorWACOM CO LTD·Filed 2017·Granted Nov 12, 2019·3 cites·18 claims
- 1379USD978966SCartridge for an electronic penWACOM CO LTD·Filed 2020·Granted Feb 21, 2023·7 cites·1 claims
- 1478US10678350B2Electronic pen, electronic pen main unit, and method for manufacturing electronic pen main unitWACOM CO LTD·Filed 2018·Granted Jun 9, 2020·2 cites·15 claims
- 1578US10345930B2Magnetic core coil and electronic penWACOM CO LTD·Filed 2017·Granted Jul 9, 2019·2 cites·16 claims
- 1678US9600095B2Position indicatorWACOM CO LTD·Filed 2014·Granted Mar 21, 2017·4 cites·16 claims
- 1776USD968408SCartridge for an electronic penWACOM CO LTD·Filed 2022·Granted Nov 1, 2022·4 cites·1 claims
- 1876USD947192SCartridge for an electronic penWACOM CO LTD·Filed 2020·Granted Mar 29, 2022·6 cites·1 claims
- 1976USD946575SCartridge for an electronic penWACOM CO LTD·Filed 2020·Granted Mar 22, 2022·6 cites·1 claims
- 2076USD946576SCartridge for an electronic penWACOM CO LTD·Filed 2020·Granted Mar 22, 2022·6 cites·1 claims
- 2176US10152144B2Position pointer and position indicator cartridgeWACOM CO LTD·Filed 2016·Granted Dec 11, 2018·2 cites·21 claims
- 2273US12216841B2Electronic pen, electronic pen cartridge, and electronic pen main unitWACOM CO LTD·Filed 2023·Granted Feb 4, 2025·0 cites·19 claims
- 2373US11861078B2Electronic pen central rod and electronic pen main body partWACOM CO LTD·Filed 2022·Granted Jan 2, 2024·0 cites·20 claims
- 2472US11714498B2Electronic pen core body and electronic penWACOM CO LTD·Filed 2022·Granted Aug 1, 2023·0 cites·20 claims
- 2566US11662834B2Electronic erasing device and writing information processing systemWACOM CO LTD·Filed 2022·Granted May 30, 2023·0 cites·16 claims
- 2666US11531410B2Electronic pen central rod and electronic pen main body partWACOM CO LTD·Filed 2022·Granted Dec 20, 2022·0 cites·18 claims
- 2764US11573649B2Electronic pen core body and electronic penWACOM CO LTD·Filed 2021·Granted Feb 7, 2023·0 cites·19 claims
- 2864USD947191SCover for a cartridge of an electronic penWACOM CO LTD·Filed 2020·Granted Mar 29, 2022·3 cites·1 claims
- 2963US11809644B2Electronic pen, electronic pen cartridge, and electronic pen main unitWACOM CO LTD·Filed 2021·Granted Nov 7, 2023·0 cites·19 claims
- 3063US11169625B2Electronic penWACOM CO LTD·Filed 2020·Granted Nov 9, 2021·0 cites·16 claims
- 3159US11360584B2Electronic penWACOM CO LTD·Filed 2021·Granted Jun 14, 2022·0 cites·20 claims
- 3253US11941194B2Electronic pen cartridgeWACOM CO LTD·Filed 2023·Granted Mar 26, 2024·0 cites·5 claims
Join the waitlist — get patent alerts
Get an alert when Ryoji Kamiyama files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →