Patents by Inventor Melvin Keith Carter
Melvin Keith Carter has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20210363087Abstract: Catalytic chemical conversion of carbon dioxide gas combined with a hydrocarbon gas, comprising natural gas, methane, ethane, propane, butane or pentane, over a transition metal oxide, produces organic solvent products. The process converts oxidized carbon compounds to valued organic products and can reduce or eliminate the carbon footprint of industrial electric power generation industry. Catalytic processes are taught for chemical conversion of oxides of carbon, principally carbon dioxide (formed by combustion of hydrocarbons), to solvent compounds comprising acetone, butanol, pentane and related organic products. The catalysts are transition metal oxides, selected from the group comprising manganese, iron and cobalt or combinations thereof.Type: ApplicationFiled: May 20, 2020Publication date: November 25, 2021Inventor: Melvin Keith Carter
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Publication number: 20210354991Abstract: The malleable ceramics taught in this application are formed from silica or silicon dioxide and transition metal compounds comprising titanium dioxide, iron (II) oxide, manganese (II) oxide, cobalt (II) oxide (MO) or salts thereof in a process of sintering or melting together in a suitable crucible within a specific mol ratio. The selected M/Si mol ratio comprises 1.6/1.0 to 1.9/1.0. These materials sinter above 1,100° C., where sintered parts exhibit densities near 3 grams/cubic centimeter and melt at higher temperatures. Thus, these materials form in a temperature range comprising 1,100° C. to 1,800° C. Malleable ceramic materials prepared as described herein deform when struck firmly with a hammer and do not fracture. Repeated striking increases the deformation or denting just like a piece of low alloy steel.Type: ApplicationFiled: May 18, 2020Publication date: November 18, 2021Inventor: Melvin Keith Carter
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Publication number: 20210355568Abstract: Pure silicon is a brittle insulator and, with addition of doping elements, performs as a semiconductor. It has found widespread use in computer integrated circuits as well as other semiconducting devices used in communication, electrical switching and power control. Silicon has also been used in solar collectors as active photovoltaic devices. The present application discloses formation and use of certain silicon alloys that take advantage of silicon's relatively low density near 2.33 grams per cubic centimeter and high melting temperature of 1,410° C. Alloys prepared with two to six percent boron, beryllium or mixtures thereof are strong and tough. Silicon steel containing near 2 percent alloying boron is hard while silicon alloys containing near 6 percent boron are tough and more flexible.Type: ApplicationFiled: May 18, 2020Publication date: November 18, 2021Applicant: Carter TechnologiesInventor: Melvin Keith Carter
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Patent number: 8697406Abstract: Sugars comprising the monosaccharides glucose and fructose, and the disaccharides sucrose and mannose are catalytically converted to ethanol in a sulfate fortified acid medium in the presence of transition metal compounds possessing a degree of symmetry. This is not a fermentation process but is a catalytic chemical process where conversion efficiency is improved by saturating the acidic reaction mixture with inorganic sulfate salts to reduce competitive reactions. Ethanol formed during the reaction is removed by distillation facilitating a continuous process.Type: GrantFiled: August 16, 2010Date of Patent: April 15, 2014Inventor: Melvin Keith Carter
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Publication number: 20130204037Abstract: A catalytic process is taught for non-oxidative alkylation of organic compounds, comprising alcohols, alkanes, glycols, ethers, aldehydes, ketones, carboxylic acids, esters, amines, thiols or phosphines, by alkyl groups produced from alcohols or glycols, forming products comprising ethers and other higher molecular weight alkylated compounds. The process is conducted at a reflux temperature below 200° C. in the presence of an acid, alkali or neutral salt dehydrating agent comprising sulfuric acid, phosphoric acid or their salts, lime or anhydrous calcium sulfate in the absence of zero valent metals and air. Specifically, this catalytic process converts ethanol to ethyl butyl ethers, ethyl hexyl ethers and dibutyl ethers or oxygenated gasoline as well as amines comprising n-butyl amine plus butanol to dibutyl amine and butyl hexyl amines at ambient pressure.Type: ApplicationFiled: February 7, 2012Publication date: August 8, 2013Applicant: Carter TechnologiesInventor: Melvin Keith Carter
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Publication number: 20120123171Abstract: Renewable resources comprising bagasse, corn stover, wood sawdust and switch grass are subject to direct catalytic conversion or bio-fermentation processes producing ethanol and organic by products leaving complex lignin compounds as waste for disposal. Chemical conversion of lignin compounds to aromatic lignin acids followed by reductive hydrogenation to cresol and substituted creosol compounds prepares these natural resources for chemical conversion to a form of gasoline and valued industrial compounds. The process disclosed herein is also applicable to organic carboxylic acid compounds such as natural oils producing valued liquid hydrocarbon fuels.Type: ApplicationFiled: November 15, 2010Publication date: May 17, 2012Applicant: Carter TechnologiesInventor: Melvin Keith Carter
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Publication number: 20120065363Abstract: Sugars comprising the monosaccharides glucose and fructose, and the disaccharides sucrose and lactose are catalytically converted to polyethers in a sulfate fortified acid medium in the presence of transition metal compounds possessing a degree of symmetry. The conversion efficiency of this catalytic chemical process is improved by saturating the acidic reaction mixture with inorganic sulfate salts to reduce competitive reactions. Polyethers formed during the reaction are removed by filtration facilitating a continuous process.Type: ApplicationFiled: September 13, 2010Publication date: March 15, 2012Applicant: Carter TechnologiesInventor: Melvin Keith Carter
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Publication number: 20120041238Abstract: Sugars comprising the monosaccharides glucose and fructose, and the disaccharides sucrose and mannose are catalytically converted to ethanol in a sulfate fortified acid medium in the presence of transition metal compounds possessing a degree of symmetry. This is not a fermentation process but is a catalytic chemical process where conversion efficiency is improved by saturating the acidic reaction mixture with inorganic sulfate salts to reduce competitive reactions. Ethanol formed during the reaction is removed by distillation facilitating a continuous process.Type: ApplicationFiled: August 16, 2010Publication date: February 16, 2012Applicant: Carter TechnologiesInventor: Melvin Keith Carter
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Patent number: 7816568Abstract: Catalytic reactions conducted during acid digestion of cellulose materials, including paper, a wide range of grasses including prairie grass, switch grass, pine wood sawdust, bagasse dried after sugar cane processing, cotton, waste cellulose products and starch materials, are taught for direct conversion to ethanol. The cellulose material is thoroughly wet in concentrated sulfuric acid in the presence of transition metal complexes possessing a degree of symmetry. Ethanol formed during the reaction can be removed by distillation affording a continuous process.Type: GrantFiled: December 17, 2007Date of Patent: October 19, 2010Inventor: Melvin Keith Carter
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Publication number: 20100168377Abstract: Catalytic processes have been developed for direct chemical conversion of amides to methyl ether polymers or methyl ether ladder polymers. Amides formed by reacting acetic acid with monoethanol amine (MEA) or acetic acid with butylamine were polymerized in the presence of transition metal catalysts in air to form linear polymers. Ethanol acetamide was catalytically converted to a linear polyether as characterized by FTIR spectra. The catalysts were based on molecular strings of mono-, di- or tri-valent transition metal compounds that opened the amide carbonyl double bond to produce linear polyethers. Laboratory results have demonstrated [cobalt(II)]2, [manganese(II)]2, cobalt(II)-manganese(II), [nickel(II)]2 and related families of catalysts to be effective for formation of methyl ether polymers by this process.Type: ApplicationFiled: December 29, 2008Publication date: July 1, 2010Applicant: Carter TechnologiesInventor: Melvin Keith Carter
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Publication number: 20100058654Abstract: Catalyst based reactions are taught for non-oxidative chemical conversion of liquid alcohols to higher boiling alcohols, ethers, glycol ethers, amines and oxygenated gasoline products, comprising ethanol to butanol, propanols to hexanols, butanols to octanols, ethanol plus butanol to ethyl butyl ethers, ethanol plus ethyl butyl ethers to ethyl hexyl ethers as oxygenated gasoline, ethanol plus ethyl hexyl ethers to butyl hexyl ethers as oxygenated gasoline, n-butyl amine plus ethanol to ethyl butyl amine, hexyl amines and related products at ambient pressure. This same catalytic chemistry also converts substituted liquid organic compounds comprising aldehydes, ketones, ethers, esters, organic acids and thiols possessing at least one active hydrogen to related alkylated organic products in the absence of air. Catalysts are based on selected transition metal complexes possessing a degree of symmetry.Type: ApplicationFiled: September 5, 2008Publication date: March 11, 2010Applicant: Carter TechnologiesInventor: Melvin Keith Carter
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Publication number: 20090156868Abstract: Catalytic reactions conducted during acid digestion of cellulose materials, including paper, a wide range of grasses including prairie grass, switch grass, pine wood sawdust, bagasse dried after sugar cane processing, cotton, waste cellulose products and starch materials, are taught for direct conversion to ethanol. The cellulose material is thoroughly wet in concentrated sulfuric acid in the presence of transition metal complexes possessing a degree of symmetry. Ethanol formed during the reaction can be removed by distillation affording a continuous process.Type: ApplicationFiled: December 17, 2007Publication date: June 18, 2009Applicant: Carter TechnologiesInventor: Melvin Keith Carter
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Publication number: 20090112026Abstract: Aldehyde and ketone reactants have been converted to hydroxyaldehydes, polyhydroxyaldehydes, hydroxyketones and/or polyhydroxyketones in aqueous liquid phase by an aldol condensation process where product carbon chain length was limited using specific dilute concentrations of soluble inorganic base. Reactions were reproducibly conducted at ambient pressure in a temperature range of ?25° C. to 50° C. and completed in ten minutes or less following reactant addition.Type: ApplicationFiled: October 29, 2007Publication date: April 30, 2009Applicant: Carter TechnologiesInventor: Melvin Keith Carter
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Publication number: 20080277316Abstract: Catalytic processes are taught for oxidative chemical conversion of gaseous reactants comprising methane, natural gas or other gaseous compounds combined with air or oxygen to products and catalytic methanation of resulting oxidized products comprising alcohols, aldehydes, ketones, glycol ethers and aldols to condensable hydrocarbons using methane, natural gas or other gaseous hydrocarbons. Gaseous reactants including methane, ethane, propane, oxides of carbon, unsaturated compounds and other organic compounds with conversion to condensable hydrocarbons by this catalytic process. The catalysts are based on di-metal, tri-metal and/or poly-metal backbone or molecular string type compounds of transition metals, comprising titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, molybdenum, ruthenium, rhodium, palladium, silver, hafnium, tantalum, tungsten, rhenium, osmium, iridium, platinum, gold and combinations thereof in conjunction with a non-fluoride magnesium halide.Type: ApplicationFiled: May 7, 2007Publication date: November 13, 2008Applicant: Carter TechnologiesInventor: Melvin Keith Carter
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Publication number: 20080275285Abstract: Catalytic processes have been developed for reductive conversion of alcohols, aldehydes, ketones, carboxylic acids, esters, ethers, amines, thiols, phosphines and aldols to hydrocarbons using methane, natural gas or other gaseous hydrocarbons. Aliphatic hydrocarbons including propane, nonanes, tridecanes, gasoline, diesel fuel, oils, solvents and other organic compounds can be formed by this catalytic process. The catalysts are based on di-metal, tri-metal and/or poly-metal backbone or molecular string type compounds of transition metals, comprising titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zirconium, niobium, molybdenum, ruthenium, rhodium, palladium, silver, hafnium, tantalum, tungsten, rhenium, osmium, iridium, platinum, gold and combinations thereof in conjunction with a non-fluoride magnesium halide.Type: ApplicationFiled: May 4, 2007Publication date: November 6, 2008Applicant: Carter TechnologiesInventor: Melvin Keith Carter
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Publication number: 20080183020Abstract: Catalytic reactions are taught for air or oxygen oxidative chemical conversion of primary alcohols to aldehydes, glycol ethers and related products and secondary alcohols to ketones and related products at ambient pressure. The catalytic process converts ethanol to acetaldehyde and 2-ethoxyethanol, n-propanol to propionaldehyde and its glycol ethers, 2-propanol to acetone, and other reactants to similar products. The catalysts are based on molecular strings of di-, tri- and/or poly- groups of transition metal complexes possessing a degree of symmetry. Laboratory results have demonstrated [manganese (II)]2, [cobalt (II)]2, [vanadium (II)]2 and similar families of catalysts to be effective for oxidative catalytic conversion of primary alcohols to products comprising related aldehydes and glycol ethers, and secondary alcohols to products comprising ketones and related products.Type: ApplicationFiled: January 26, 2007Publication date: July 31, 2008Applicant: Carter TechnologiesInventor: Melvin Keith Carter
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Patent number: 7033409Abstract: The present invention relates to compositions for the chemical mechanical planarization (“CMP”) of barrier/adhesion layers, particularly Ta/TaN barrier/adhesion layers as occur in the manufacture of integrated circuits. CMP compositions comprise an aqueous solution of oxidizer and colloidal silica abrasive. Oxidizers include hydroxylamine nitrate, nitric acid, benzotriazole, ammonium nitrate, aluminum nitrate, hydrazine and mixtures thereof in aqueous solution.Type: GrantFiled: September 22, 2003Date of Patent: April 25, 2006Assignee: DANanoMaterials LLCInventors: Robert J. Small, Maria Peterson, Tuan Truong, Melvin Keith Carter, Lily Yao
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Patent number: 6866792Abstract: The present invention relates chemical mechanical planarization (“CMP”) of copper surfaces and describes copper CMP slurries including an oxidizer, one or more hydroxylamine compounds and at least one abrasive. The hydroxylamine compositions can include hydroxylamine nitrate, hydroxylamine, hydroxylamine sulfate, hydroxyl ammonium salts and mixtures thereof. The oxidizers may further include citric acid as a complexing agent for copper. Sulfuric acid and/or nitric acid provide means for modifying the pH of the oxidizer so that the hydroxylamine chemistries are acidic. Some embodiments include corrosion inhibitors such as benzotriazole, 2,4-pentadione dioxime and/or 1,6-dioxaspiro[4,4] nonane 2,7-dione. Some embodiments also include a free radical inhibitor, advantageously hydrazine. Colloidal silica and milled alumina are used as typical abrasive components.Type: GrantFiled: December 12, 2001Date of Patent: March 15, 2005Assignee: EKC Technology, Inc.Inventors: Robert J. Small, Maria Peterson, Tuan Truong, Melvin Keith Carter, Lily Yao
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Patent number: 6638326Abstract: The present invention relates to compositions for the chemical mechanical planarization (“CMP”) of barrier/adhesion layers, particularly Ta/TaN barrier/adhesion layers as occur in the manufacture of integrated circuits. CMP compositions comprise an aqueous solution of oxidizer and colloidal silica abrasive. Oxidizers include hydroxylamine nitrate, nitric acid, benzotriazole, ammonium nitrate, aluminum nitrate, hydrazine and mixtures thereof in aqueous solution.Type: GrantFiled: September 25, 2001Date of Patent: October 28, 2003Assignee: EKC Technology, Inc.Inventors: Robert J. Small, Maria Peterson, Tuan Truong, Melvin Keith Carter, Lily Yao
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Publication number: 20030164471Abstract: The present invention relates chemical mechanical planarization (“CMP”) of copper surfaces and describes copper CMP slurries including an oxidizer, one or more hydroxylamine compounds and at least one abrasive. The hydroxylamine compositions can include hydroxylamine nitrate, hydroxylamine, hydroxylamine sulfate, hydroxyl ammonium salts and mixtures thereof. The oxidizers may further include citric acid as a complexing agent for copper. Sulfuric acid and/or nitric acid provide means for modifying the pH of the oxidizer so that the hydroxylamine chemistries are acidic. Some embodiments include corrosion inhibitors such as benzotriazole, 2,4-pentadione dioxime and/or 1,6-dioxaspiro[4,4]nonane 2,7-dione. Some embodiments also include a free radical inhibitor, advantageously hydrazine. Colloidal silica and milled alumina are used as typical abrasive components.Type: ApplicationFiled: December 12, 2001Publication date: September 4, 2003Applicant: EKC Technology, Inc.Inventors: Robert J. Small, Maria Peterson, Tuan Truong, Melvin Keith Carter, Lily Yao