Inventor · disambiguated record
Gregory T. Coolidge
Also filed as: COOLIDGE GREGORY · COOLIDGE GREGORY T · Coolidge Gregory Thomas
11 granted patents·80 citations·filing 1996–2020
88Inventor score
Top patents by PatentIndex Score
11 records- 0189US10590962B2Directional control valvePARKER HANNIFIN CORP·Filed 2017·Granted Mar 17, 2020·9 cites·20 claims
- 0289US9027589B2Hydraulic valve with pressure limiterCOOLIDGE GREGORY·Filed 2010·Granted May 12, 2015·14 cites·21 claims
- 0384US9689500B2Pressure limited flow spoolPARKER HANNIFIN CORP·Filed 2014·Granted Jun 27, 2017·7 cites·20 claims
- 0483US7921878B2Control valve with load sense signal conditioningPARKER HANNIFIN CORP·Filed 2007·Granted Apr 12, 2011·12 cites·11 claims
- 0581US10156246B2Directional control valvePARKER HANNIFIN CORP·Filed 2015·Granted Dec 18, 2018·3 cites·20 claims
- 0680US10281934B2Hydraulic control valve with controlled flow and valve safety disablePARKER HANNIFIN CORP·Filed 2017·Granted May 7, 2019·3 cites·20 claims
- 0780US9429175B2Pressure compensated hydraulic system having differential pressure controlCOOLIDGE GREGORY T·Filed 2011·Granted Aug 30, 2016·10 cites·21 claims
- 0853US5699665AControl system with induced load isolation and reliefCOMMERCIAL INTERTECH CORP·Filed 1996·Granted Dec 23, 1997·22 cites·20 claims
- 0949US12442396B2Valve with an adjustable flow sharing pressure compensatorPARKER HANNIFIN CORP·Filed 2020·Granted Oct 14, 2025·0 cites·7 claims
- 1049US9683586B2Hydraulic sectional control valve with multiple relief slotsPARKER HANNIFIN CORP·Filed 2015·Granted Jun 20, 2017·0 cites·20 claims
- 1145US9810334B2Pressure limited flow priority boostPARKER HANNIFIN CORP·Filed 2014·Granted Nov 7, 2017·0 cites·15 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →