Inventor · disambiguated record
Ryohei Sumiyoshi
Also filed as: SUMIYOSHI RYOHEI
29 granted patents·1 pending application·290 citations·filing 2002–2022
96Inventor score
Top patents by PatentIndex Score
30 records- 0196US8495870B2Work machineSUMIYOSHI RYOHEI·Filed 2010·Granted Jul 30, 2013·26 cites·13 claims
- 0295US10451094B2Hydraulic system of work machineKUBOTA KK·Filed 2016·Granted Oct 22, 2019·9 cites·30 claims
- 0395US10316496B2Hydraulic system for work machine, and work machineKUBOTA KK·Filed 2016·Granted Jun 11, 2019·7 cites·27 claims
- 0494US8821104B2Loader work machineYASUDA TOYOAKI·Filed 2009·Granted Sep 2, 2014·39 cites·17 claims
- 0593US6675925B2Working vehicleKUBOTA KK·Filed 2002·Granted Jan 13, 2004·53 cites·7 claims
- 0692US10280906B2Hydraulic system for work machineKUBOTA KK·Filed 2017·Granted May 7, 2019·6 cites·4 claims
- 0787US9828744B2Working machineKUBOTA KK·Filed 2016·Granted Nov 28, 2017·5 cites·13 claims
- 0887USD790598SSkid steer loaderKUBOTA KK·Filed 2016·Granted Jun 27, 2017·25 cites·1 claims
- 0987US8342789B2Loader work machineKUBOTA KK·Filed 2009·Granted Jan 1, 2013·16 cites·16 claims
- 1085US9752302B2Working machineKUBOTA KK·Filed 2015·Granted Sep 5, 2017·4 cites·12 claims
- 1184US7740254B2Wheeled work machineKUBOTA KK·Filed 2006·Granted Jun 22, 2010·16 cites·6 claims
- 1283US11644098B2Hydraulic system of work machine and work machineKUBOTA KK·Filed 2020·Granted May 9, 2023·1 cites·5 claims
- 1383US9567729B2Working machineKUBOTA KK·Filed 2015·Granted Feb 14, 2017·4 cites·17 claims
- 1483US8545163B2Loader work machineYASUDA TOYOAKI·Filed 2009·Granted Oct 1, 2013·14 cites·10 claims
- 1579US6990757B2Wheeled work vehicleKUBOTA KK·Filed 2004·Granted Jan 31, 2006·27 cites·18 claims
- 1676US8276705B2Wheel loaderSUMIYOSHI RYOHEI·Filed 2007·Granted Oct 2, 2012·11 cites·11 claims
- 1772US10641388B2Hydraulic system of work machine and work machineKUBOTA KK·Filed 2016·Granted May 5, 2020·1 cites·9 claims
- 1872US10150366B2Work machine with tank supported on bonnetKUBOTA KK·Filed 2016·Granted Dec 11, 2018·2 cites·9 claims
- 1971USRE50366EHydraulic system for work machine, and work machineKUBOTA KK·Filed 2021·Granted Apr 8, 2025·0 cites·27 claims
- 2068US10900562B2Hydraulic system of work machine and work machineKUBOTA KK·Filed 2020·Granted Jan 26, 2021·0 cites·5 claims
- 2165US9988790B2Working machineKUBOTA KK·Filed 2017·Granted Jun 5, 2018·1 cites·5 claims
- 2259USD727366SArmrest for construction equipmentKUBOTA KK·Filed 2014·Granted Apr 21, 2015·10 cites·1 claims
- 2357US2019195207A1Hydraulic system for work machineKUBOTA KK·Filed 2019·Application pending·0 cites
- 2453US10260213B2Working machineKUBOTA KK·Filed 2017·Granted Apr 16, 2019·0 cites·14 claims
- 2552USD1023074SPortion of a tractorKUBOTA KK·Filed 2022·Granted Apr 16, 2024·1 cites·1 claims
- 2651US8167077B2Wheeled work machineTAKEMURA TOSHIHIKO·Filed 2006·Granted May 1, 2012·3 cites·8 claims
- 2749US12311751B2Tank and method of manufacturing a tankKUBOTA KK·Filed 2022·Granted May 27, 2025·0 cites·20 claims
- 2849US10352335B2Hydraulic system of work machineKUBOTA KK·Filed 2016·Granted Jul 16, 2019·0 cites·12 claims
- 2949USD777801SAir conditioning duct for construction equipmentKUBOTA KK·Filed 2014·Granted Jan 31, 2017·6 cites·1 claims
- 3042USD761880SSkid steer loaderKUBOTA KK·Filed 2014·Granted Jul 19, 2016·3 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →