Inventor · disambiguated record
William David Hardgrave
Also filed as: HARDGRAVE WILLIAM D · HARDGRAVE WILLIAM DAVID
6 granted patents·2 pending applications·441 citations·filing 1978–2016
87Inventor score
Top patents by PatentIndex Score
8 records- 0194US8656720B1Extended range organic Rankine cycleHARDGRAVE WILLIAM DAVID·Filed 2011·Granted Feb 25, 2014·71 cites·42 claims
- 0290US4214605AActuator for wireline blowout preventerOTIS ENG CO·Filed 1978·Granted Jul 29, 1980·58 cites·8 claims
- 0388US6662078B1System and method for item management via an electronic communication networkFiled 2002·Granted Dec 9, 2003·109 cites·31 claims
- 0475US8844287B1Thermodynamic amplifier cycle system and methodHARDGRAVE WILLIAM DAVID·Filed 2013·Granted Sep 30, 2014·2 cites·45 claims
- 0571US6010239AAutomatic item-driven system for deposit and pick-upFiled 1996·Granted Jan 4, 2000·192 cites·8 claims
- 0662US2017023236A1Vortex Tube Supplying Superheated Vapor for Turbine Power GenerationHARDGRAVE WILLIAM DAVID·Filed 2016·Application pending·0 cites
- 0757US2016047279A1Vortex tube supplying superheated vapor for turbine power generationHARDGRAVE WILLIAM DAVID·Filed 2015·Application pending·0 cites
- 0843US7021373B2Downhole hydraulic ramHARDGRAVE WILLIAM DAVID·Filed 2003·Granted Apr 4, 2006·9 cites·32 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →