Inventor · disambiguated record
Charles R. Clark
Also filed as: CLARK CHARLES R
15 granted patents·1 pending application·1,202 citations·filing 1974–2011
95Inventor score
Top patents by PatentIndex Score
16 records- 0198US4986353APlacement process for oil field chemicalsCONOCO INC·Filed 1988·Granted Jan 22, 1991·362 cites·7 claims
- 0297US4986355AProcess for the preparation of fluid loss additive and gel breakerCONOCO INC·Filed 1989·Granted Jan 22, 1991·429 cites·7 claims
- 0387US7641692B2Implantable joint prosthesisWARSAW ORTHOPEDIC INC·Filed 2001·Granted Jan 5, 2010·120 cites·37 claims
- 0485US4856593AInhibition of hydrate formationCONOCO INC·Filed 1987·Granted Aug 15, 1989·52 cites·5 claims
- 0581US8092542B2Implantable joint prosthesisBRYAN VINCENT·Filed 2009·Granted Jan 10, 2012·23 cites·20 claims
- 0681US4287902AMethod of transporting viscous hydrocarbonsCONOCO INC·Filed 1979·Granted Sep 8, 1981·30 cites·10 claims
- 0779US5023059ARecovery of metal values and hydrofluoric acid from tantalum and columbium waste sludgeBIELECKI EDWIN J·Filed 1988·Granted Jun 11, 1991·30 cites·44 claims
- 0878US3992172ASeparator arrangement for start-up systemFOSTER WHEELER ENERGY CORP·Filed 1975·Granted Nov 16, 1976·32 cites·6 claims
- 0976US4379165AAnti-convulsantRESEARCH CORP·Filed 1981·Granted Apr 5, 1983·15 cites·5 claims
- 1072US5156767AEmulsion breaking using alkylphenol-polyethylene oxide-acrylate polymer coated coalescer materialCONOCO INC·Filed 1992·Granted Oct 20, 1992·28 cites·5 claims
- 1169US4126162AAerial refueling devicePARKER HANNIFIN CORP·Filed 1977·Granted Nov 21, 1978·26 cites·36 claims
- 1269US3933201AMethod using overbased branched-chain alkylaromatic sulfonates as waterflood additivesCONTINENTAL OIL CO·Filed 1974·Granted Jan 20, 1976·14 cites·4 claims
- 1368US4282909AAerial refueling devicePARKER HANNIFIN CORP·Filed 1979·Granted Aug 11, 1981·27 cites·46 claims
- 1446US3952803AOil recovery method using overbased waterflood additive containing sulfonates derived from alkylation reaction productsCONTINENTAL OIL CO·Filed 1975·Granted Apr 27, 1976·10 cites·4 claims
- 1546US2011295374A1Implantable joint prosthesisBRYAN VINCENT·Filed 2011·Application pending·0 cites
- 1629US3965984AWaterflood method using overbased normal alkylaromatic sulfonatesCONTINENTAL OIL CO·Filed 1974·Granted Jun 29, 1976·4 cites·14 claims
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