22 patents
Utility
Preparation of lithium carbonate from lithium chloride containing brines
16 May 23
This invention relates to a method for the preparation of lithium carbonate from lithium chloride containing brines.
Stephen Harrison
Filed: 7 Aug 20
Utility
Preparation of Lithium Carbonate from Lithium Chloride Containing Brines
23 Mar 23
This invention relates to a method for the preparation of lithium carbonate from lithium chloride containing brines.
Stephen Harrison
Filed: 21 Sep 22
Utility
Treated Geothermal Brine Compositions with Reduced Concentration of Silica, Iron and Lithium
16 Mar 23
This invention relates to treated geothermal brine compositions containing reduced concentrations of lithium, iron and silica compared to the untreated brines.
Stephen Harrison, John Burba, III
Filed: 31 Aug 22
Utility
Refrigeration-integrated Hydrocarbon Collection System and Method of Operation
2 Mar 23
A method for recovering associated gaseous hydrocarbons from a well for producing liquid hydrocarbons, the method comprising (i) providing gaseous hydrocarbons from a hydrocarbon well; (ii) providing a cryogenic liquid from an air separation unit or an associated nitrogen liquefaction facility within proximity of the hydrocarbon well; (iii) liquefying the gaseous hydrocarbons at a hydrocarbon liquefaction facility within proximity to the hydrocarbon well to thereby produce a liquefied hydrocarbon gas, where heat associated with the gaseous hydrocarbons is transferred to the cryogenic liquid; and (iv) transferring the liquefied hydrocarbon gas to an air separation unit or nitrogen liquefaction facility.
John M. REPASKY
Filed: 11 Feb 21
Utility
Photochlorination of chloroform to carbon tetrachloride
21 Feb 23
A method of producing carbon tetrachloride, the method comprising the step of reacting chlorine with chloroform in the presence of electromagnetic radiation within a reaction mixture that includes the chlorine, the chloroform, and carbon tetrachloride, where the concentration of chloroform is less than 5000 ppm by weight relative to the weight of the reaction mixture, where the reaction mixture includes at least stoichiometric levels of chlorine relative to chloroform, where the electromagnetic radiation creates chloride radicals, and where the reaction mixture is well mixed.
Robert L. Zeller, Darrell Hollis, Keith S. Kramer, Brian Calderwood, Rodney L. Klausmeyer
Filed: 28 Sep 20
Utility
Method for making 1,1,3,3-tetrachloropropene
31 Jan 23
A process for the manufacture of 1,1,3,3-tetrachloropropene, the process comprising dehydrochlorinating 1,1,1,3,3-pentachloropropane, where said step of dehydrochlorinating 1,1,1,3,3-pentachloropropane takes place in the presence of an oxidizing agent and in the presence of a Lewis acid, and where the oxidizing agent is chlorine and the Lewis acid is ferric chloride.
Rodney L. Klausmeyer, Darrell G. Hollis, Keith S. Kramer, John L. Dawkins, Derrek Rae Burrows
Filed: 27 Aug 21
Utility
Process for the Conversion of Carbon Dioxide
3 Nov 22
A process for the production of syngas, the process comprising (i) reacting at least a portion of carbon dioxide with hydrogen within an initial reactor to produce an initial product stream including carbon monoxide, water, unreacted carbon dioxide, and unreacted hydrogen; and (ii) reacting at least a portion of the unreacted carbon dioxide and unreacted hydrogen within a reactor downstream of the first reactor to thereby produce a product stream including carbon monoxide, water, unreacted carbon dioxide, and unreacted hydrogen.
John M. REPASKY, Robert L. ZELLER, III
Filed: 28 Sep 20
Utility
Methods for providing polyvinyl chloride particles for preparing chlorinated polyvinyl chloride
11 Oct 22
A method for providing particles of polyvinyl chloride, wherein the particles offer improved chlorinating efficiency, the method comprising (i) providing polyvinyl chloride particles; and (ii) introducing a chlorination accelerant to the polyvinyl chloride particles to thereby provide polyvinyl chloride particles having an accelerant associated therewith.
Keith S. Kramer, Lance Mayer, Rodney L. Klausmeyer
Filed: 7 Mar 17
Utility
Catalyst and process for oxychlorination of ethylene to dichloroethane
27 Sep 22
In an oxychlorination process of the type where ethylene is converted to 1,2-dichloroethane in the presence of a supported copper catalyst, the improvement comprising: the use of a supported catalyst prepared by (i) impregnating, within a first step, an alumina support with a first aqueous solution including copper, to thereby form a first catalyst component; and (ii) impregnating, within a subsequent step, the first catalyst component with a second aqueous solution including copper and alkaline earth metal, to thereby form the supported catalyst.
Keith Kramer
Filed: 23 Jun 15
Utility
Methods Involving Cements That Employ Carbon Dioxide As a Reactant
16 Jun 22
A method of cementing an annular space between a pipe string and a well bore, the method comprising the steps of (a) providing a cement composition including a calcium-deficient calcium silicate; (b) mixing the cement composition with water to form a cement slurry; (c) mixing the cement slurry composition with carbon dioxide form a foamed cement; and (d) placing the foamed cement in the annular space between the pipe string and the wellbore.
Kenneth M. COWAN, Robert L. ZELLER, III, Elias R. CALLAHAN, III, James S. WILLIS
Filed: 1 Apr 20
Utility
Photochlorination of Partially-chlorinated Chloromethanes to Carbon Tetrachloride
21 Apr 22
A method of producing carbon tetrachloride includes providing a chloromethanes stream, combining the chloromethanes stream with chlorine and additional carbon tetrachloride to form a reaction mixture, wherein the reaction mixture includes at least stoichiometric levels of chlorine, introducing electromagnetic radiation to the reaction mixture and subjecting the reaction mixture to suitable reaction conditions to form product carbon tetrachloride, and collecting a product stream including the product carbon tetrachloride.
Robert L. ZELLER, III, Darrell G. HOLLIS, Keith S. KRAMER, Brian CALDERWOOD, Rodney L. KLAUSMEYER, John L. DAWKINS
Filed: 10 Jan 20
Utility
Method for Making 1,1,3,3-TETRACHLOROPROPENE
16 Dec 21
A process for the manufacture of 1,1,3,3-tetrachloropropene, the process comprising dehydrochlorinating 1,1,1,3,3-pentachloropropane, where said step of dehydrochlorinating 1,1,1,3,3-pentachloropropane takes place in the presence of an oxidizing agent and in the presence of a Lewis acid, and where the oxidizing agent is chlorine and the Lewis acid is ferric chloride.
Rodney L. KLAUSMEYER, Darrell G. HOLLIS, Keith S. KRAMER, John L. DAWKINS, Derrek Rae BURROWS
Filed: 27 Aug 21
Utility
Process for the Production of Chlorinated Hydrocarbons
18 Nov 21
A process of the type for producing 1,1,1,2,3-pentachloropropane by introducing 1,1,1,3-tetrachloropropane, chlorine, and Lewis acid catalyst, optionally in the presence of carbon tetrachloride, the improvement comprising introducing the Lewis acid as a slurry within a chlorinated hydrocarbon.
John L. DAWKINS, Darrell HOLLIS, Keith S. KRAMER, Brian CALDERWOOD, Michael A. GARMON
Filed: 24 Jul 17
Utility
Method for making 1,1,3,3-tetrachloropropene
31 Aug 21
A process for the manufacture of 1,1,3,3-tetrachloropropene, the process comprising dehydrochlorinating 1,1,1,3,3-pentachloropropane.
Rodney L. Klausmeyer, Darrell G. Hollis, Keith S. Kramer, John L. Dawkins, Derrek Rae Burrows
Filed: 17 Feb 20
Utility
Catalyst and Process for Oxychlorination of Ethylene to Dichloroethane
5 Aug 21
In an oxychlorination process of the type where ethylene is converted to 1,2-dichloroethane in the presence of a supported copper catalyst, the improvement comprising: the use of a supported catalyst prepared by (i) impregnating, within a first step, an alumina support with a first aqueous solution including copper, an alkaline earth metal, and an alkali metal to thereby form a first catalyst component; and (ii) impregnating, within a subsequent step, the first catalyst component with a second aqueous solution including copper and alkaline earth metal, where the second aqueous solution is substantially devoid of alkali metal, to thereby form the supported catalyst.
Keith KRAMER
Filed: 19 Apr 21
Utility
Photochlorination of Chloroform to Carbon Tetrachloride
14 Jan 21
A method of producing carbon tetrachloride, the method comprising the step of reacting chlorine with chloroform in the presence of electromagnetic radiation within a reaction mixture that includes the chlorine, the chloroform, and carbon tetrachloride, where the concentration of chloroform is less than 5000 ppm by weight relative to the weight of the reaction mixture, where the reaction mixture includes at least stoichiometric levels of chlorine relative to chloroform, where the electromagnetic radiation creates chloride radicals, and where the reaction mixture is well mixed.
Robert L. ZELLER, Darrell HOLLIS, Keith S. KRAMER, Brian CALDERWOOD, Rodney L. KLAUSMEYER
Filed: 28 Sep 20
Utility
Chloralkali process
23 Nov 20
A method of the type where a brine solution is converted to an alkali metal hydroxide solution within a diaphragm cell, and the resulting cell liquor from the diaphragm cell is introduced to one or more fuel cells for the conversion of the alkali metal hydroxide to form electricity, the improvement comprising regulating the conversion of alkali metal hydroxide within the fuel cell to a conversion of less than 90%, and then subsequently concentrating the alkali metal hydroxide concentration from the anolyte stream of the fuel cell.
Robert L. Zeller, Clifton T. Gonce
Filed: 5 Jun 17
Utility
Methods of making chlorinated hydrocarbons
28 Sep 20
Methods for the manufacture of 1,1,1,2,3-pentachloropropane from 1,1,1,3-tetrachloropropane and chlorine are disclosed.
Richard L. Wilson, Rodney L. Klausmeyer, John Lee Dawkins, Daniel D. Rohrback, James S. Strathe, Lloyd B. Branam
Filed: 4 Dec 19
Utility
Methods for producing halogenated propanes
28 Sep 20
A process of the type for producing chlorinated propanes by reacting carbon tetrachloride with ethylene within a tank reactor that includes a liquid reaction mixture and a headspace above the reaction mixture wherein ethylene gas diffuses from the liquid reaction mixture into the headspace while agitating the reaction mixture, the improvement comprising transferring ethylene within the headspace back into the reaction mixture through a conduit within the mixing device that agitates the reaction mixture.
John L Dawkins, Darrell Hollis, Keith S. Kramer, Brian Calderwood
Filed: 23 Jul 17
Utility
Photochlorination of chloroform to carbon tetrachloride
28 Sep 20
A method of producing carbon tetrachloride, the method comprising the step of reacting chlorine with chloroform in the presence of electromagnetic radiation within a reaction mixture that includes the chlorine, the chloroform, and carbon tetrachloride, where the concentration of chloroform is less than 5000 ppm by weight relative to the weight of the reaction mixture, where the reaction mixture includes at least stoichiometric levels of chlorine relative to chloroform, where the electromagnetic radiation creates chloride radicals, and where the reaction mixture is well mixed.
Robert L. Zeller, Darrell Hollis, Keith S. Kramer, Brian Calderwood, Rodney L. Klausmeyer
Filed: 29 Jun 17