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Patentes

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Patente citante Fecha de presentación Fecha de emisión Cesionario original Título
US405450528 Abr 197618 Oct 1977Western Oil Sands Ltd.Method of removing bitumen from tar sand for subsequent recovery of the bitumen
US405450630 Ago 197618 Oct 1977Western Oil Sands Ltd.Method of removing bitumen from tar sand utilizing ultrasonic energy and stirring
US409182620 Jul 197630 May 1978Hoesch Werke AktiengesellschaftMethod for degreasing rolling mill scale
US412077518 Jul 197717 Oct 1978Natomas CompanyProcess and apparatus for separating coarse sand particles and recovering bitumen from tar sands
US416829527 Sep 197718 Sep 1979Vernon D. BeehlerApparatus for enhancing chemical reactions
US425218916 Feb 197924 Feb 1981Vibratory method for minimg shale oil or the like
US431378525 Oct 19792 Feb 1982Method and apparatus for treating waste rock cuttings
US432311924 Nov 19806 Abr 1982Vibratory apparatus for mining shale oil or the like
US444332218 Ago 198217 Abr 1984TekSonix, Inc.Continuous process and apparatus for separating hydrocarbons from earth particles and sand
US460677430 Jul 198419 Ago 1986The Dow Chemical CompanyProcess for removing contaminants from soils
US53442553 Ene 19926 Sep 1994Itex Enterprises, Inc.Oil, water and sand separator
US602765126 Oct 199822 Feb 2000Process for regenerating spent solvent
US611035915 May 199629 Ago 2000Mobil Oil CorporationMethod for extracting bitumen from tar sands
US636841417 Jun 19999 Abr 2002Washing parts with ultrasonic energy
US789705011 Mar 20081 Mar 2011Accudyne Systems, Inc.Dense gas means for extraction of a solute from solids

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