Patents by Inventor Dennis J. Malfer
Dennis J. Malfer 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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Patent number: 9783752Abstract: New, highly effective substantially pure Mannich detergents for use in hydrocarbon fuels reduce engine deposits in spark and compression ignition internal combustion engines. The Mannich condensation reaction products are obtainable by reacting: (i) a polyamine having primary amino groups, (ii) a hydrocarbyl-substituted hydroxyaromatic compound, and (iii) an aldehyde, wherein the reaction is conducted at in a molar ratio of (i):(ii):(iii) of approximately 1:2:3. The Mannich detergent compounds may be dispersed in a liquid carrier to provide a fuel additive concentrate for hydrocarbon engine fuels which effectively control engine deposit formation in intake valves, port fuel injectors and combustion chambers.Type: GrantFiled: December 15, 2006Date of Patent: October 10, 2017Assignee: Afton Chemical CorporationInventors: Dennis J. Malfer, May D. Thomas
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Patent number: 8623105Abstract: A diesel fuel, diesel fuel additive concentrate and method for improving the performance of fuel injectors for a diesel engine are provided. The diesel fuel includes a major amount of middle distillate fuel; and a reaction product of a hydrocarbyl substituted dicarboxylic acid or anhydride and an amine compound or salt. The amine compound has the formula wherein R is selected from the group consisting of a hydrogen and a hydrocarbyl group containing from about 1 to about 15 carbon atoms, and R1 is selected from the group consisting of hydrogen and a hydrocarbyl group containing from about 1 to about 20 carbon atoms. The reaction product contains at least one amino triazole group and is present in the fuel in an amount sufficient to improve the performance of diesel fuel injectors.Type: GrantFiled: May 19, 2008Date of Patent: January 7, 2014Assignee: Afton Chemical CorporationInventors: Dennis J. Malfer, Joshua J. Bennett, Jason A. Lagona, David A. Hutchison
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Patent number: 8557003Abstract: New, highly effective substantially pure Mannich detergents for use in hydrocarbon fuels reduce engine deposits in spark and compression ignition internal combustion engines. The Mannich condensation reaction products are obtainable by reacting: (i) a polyamine having primary amino groups, (ii) a hydrocarbyl-substituted hydroxyaromatic compound, and (iii) an aldehyde, wherein the reaction is conducted at in a molar ratio of (i):(ii):(iii) of approximately 1:2:3 or 1:1:2. The Mannich detergent compounds may be dispersed in a liquid carrier to provide a fuel additive concentrate for hydrocarbon engine fuels which effectively control engine deposit formation in intake valves, port fuel injectors and combustion chambers.Type: GrantFiled: September 8, 2008Date of Patent: October 15, 2013Assignee: Afton Chemical CorporationInventors: Dennis J. Malfer, May D. Thomas
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Patent number: 8231695Abstract: The use of fuel compositions comprising selected hydrocarbon oils as carriers for detergents has been found to reduce deposit formation as well as prolong the functionality of fuel injectors. The selection and utilization of particularly characterized hydrocarbon oils as detergent carriers reduces intake valve deposits and combustion chamber deposits, in comparison to conventionally used carrier fluids.Type: GrantFiled: August 9, 2006Date of Patent: July 31, 2012Assignee: Afton Chemical CorporationInventors: Lawrence J. Cunningham, Beth A. Sloane, Dennis J. Malfer, May Duffield Thomas
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Publication number: 20100037514Abstract: A diesel fuel, diesel fuel additive concentrate and method for improving the performance of fuel injectors for a diesel engine are provided. The diesel fuel includes a major amount of middle distillate fuel; and a reaction product of a hydrocarbyl substituted dicarboxylic acid or anhydride and an amine compound or salt. The amine compound has the formula wherein R is selected from the group consisting of a hydrogen and a hydrocarbyl group containing from about 1 to about 15 carbon atoms, and R1 is selected from the group consisting of hydrogen and a hydrocarbyl group containing from about 1 to about 20 carbon atoms. The reaction product contains at least one amino triazole group and is present in the fuel in an amount sufficient to improve the performance of diesel fuel injectors.Type: ApplicationFiled: May 13, 2008Publication date: February 18, 2010Applicant: Afton Chemical CorporationInventors: Dennis J. Malfer, Joshua J. Bennett, Jason A. Lagona, David A. Hutchison
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Publication number: 20090282731Abstract: A diesel fuel, diesel fuel additive concentrate and method for improving the performance of fuel injectors for a diesel engine are provided. The diesel fuel includes a major amount of middle distillate fuel; and a reaction product of a hydrocarbyl substituted dicarboxylic acid or anhydride and an amine compound or salt. The amine compound has the formula wherein R is selected from the group consisting of a hydrogen and a hydrocarbyl group containing from about 1 to about 15 carbon atoms, and R1 is selected from the group consisting of hydrogen and a hydrocarbyl group containing from about 1 to about 20 carbon atoms. The reaction product contains at least one amino triazole group and is present in the fuel in an amount sufficient to improve the performance of diesel fuel injectors.Type: ApplicationFiled: May 19, 2008Publication date: November 19, 2009Applicant: AFTON CHEMICAL CORPORATIONInventors: Dennis J. MALFER, Joshua J. BENNETT, Jason A. LAGONA, David A. HUTCHISON
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Patent number: 7597726Abstract: New, highly effective Mannich detergents for use in hydrocarbon fuels are described which reduce engine deposits in spark and compression ignition internal combustion engines. They are Mannich condensation reaction products obtained from reacting: (i) a polyamine having a sterically-hindered primary amino group, (ii) a hydrocarbyl-substituted hydroxyaromatic compound, and (iii) an aldehyde. These Mannich detergent compounds may be dispersed in a liquid carrier to provide a fuel additive concentrate for hydrocarbon engine fuels which effectively control engine deposit formation in intake valves and also other engine regions such as port fuel injectors and combustion chambers.Type: GrantFiled: January 20, 2006Date of Patent: October 6, 2009Assignee: Afton Chemical CorporationInventors: Peter W. Hou, Dennis J. Malfer, May Duffield Thomas, William J. Colucci
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Publication number: 20090071065Abstract: New, highly effective substantially pure Mannich detergents for use in hydrocarbon fuels reduce engine deposits in spark and compression ignition internal combustion engines. The Mannich condensation reaction products are obtainable by reacting: (i) a polyamine having primary amino groups, (ii) a hydrocarbyl-substituted hydroxyaromatic compound, and (iii) an aldehyde, wherein the reaction is conducted at in a molar ratio of (i):(ii):(iii) of approximately 1:2:3 or 1:1:2. The Mannich detergent compounds may be dispersed in a liquid carrier to provide a fuel additive concentrate for hydrocarbon engine fuels which effectively control engine deposit formation in intake valves, port fuel injectors and combustion chambers.Type: ApplicationFiled: September 8, 2008Publication date: March 19, 2009Applicant: AFTON CHEMICAL CORPORATIONInventors: Dennis J. Malfer, May D. Thomas
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Patent number: 7435272Abstract: A friction modifier for combustible fuels is provided that is prepared by combining a saturated carboxylic acid and an alkoxylated amine or etheramine. Furthermore, there also is an additive concentrate for use in fuels, especially in gasoline for internal combustion engines, comprising (a) a friction modifier comprising of a branched saturated carboxylic acid salt of an alkoxylated amine, such as isohexyloxypropylamine isostearate; (b) a detergent package, as well as the combustible fuels containing this additive concentrate. The particular selection of friction modifier (a) enables a stable additive concentrate to be formulated providing a significant benefit in friction loss when incorporated in gasoline used to fuel an internal combustion engine, and hence an improvement in fuel economy.Type: GrantFiled: April 22, 2003Date of Patent: October 14, 2008Assignee: Afton Chemical IntangiblesInventors: Allen A. Aradi, Dennis J. Malfer, Scott D. Schwab, William J. Colucci
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Patent number: 7422161Abstract: Treated port fuel injectors are disclosed. The treated port fuel injectors have a surface coated with a film which resists or limits deposit formation on the injector surface. The film may be formed by contacting the port fuel injector with: (i) a succinimide compound comprising the reaction product of polyisobutylene-substituted succinic anhydride and a polyamine; (ii) a Mannich base detergent; and (iii) a spark ignition fuel. The treated port fuel injectors may also include a film formed by contacting the port fuel injector with: (i) a Mannich condensation reaction product of a polyamine having a sterically-hindered primary amino group, a hydrocarbyl-substituted hydroxyaromatic compound, and an aldehyde; and (ii) a spark ignition fuel. Methods of forming films on port fuel injector surfaces are also disclosed.Type: GrantFiled: March 30, 2006Date of Patent: September 9, 2008Assignee: Afton Chemical CorporationInventors: Peter W. Hou, Dennis J. Malfer, Thomas William Nichols
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Patent number: 7402185Abstract: A method for reducing the formation of combustion chamber deposits in an engine using a friction modifier for combustible fuels is provided. The friction modifier is prepared by combining a saturated carboxylic acid and an alkylated or alkoxylated amine. The particular selection of friction modifier enables a stable additive concentrate to be formulated providing a significant decrease in CCD without increasing the incidence of IVD deposits in combustion engines running on a fuel modified with the additive concentrate.Type: GrantFiled: March 26, 2003Date of Patent: July 22, 2008Assignee: Afton Chemical Intangibles, LLCInventors: Allen A. Aradi, Dennis J. Malfer, Scott D. Schwab, William J. Colucci
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Publication number: 20080141583Abstract: New, highly effective substantially pure Mannich detergents for use in hydrocarbon fuels reduce engine deposits in spark and compression ignition internal combustion engines. The Mannich condensation reaction products are obtainable by reacting: (i) a polyamine having primary amino groups, (ii) a hydrocarbyl-substituted hydroxyaromatic compound, and (iii) an aldehyde, wherein the reaction is conducted at in a molar ratio of (i):(ii):(iii) of approximately 1:2:3. The Mannich detergent compounds may be dispersed in a liquid carrier to provide a fuel additive concentrate for hydrocarbon engine fuels which effectively control engine deposit formation in intake valves, port fuel injectors and combustion chambers.Type: ApplicationFiled: December 15, 2006Publication date: June 19, 2008Applicant: Afton Chemical CorporationInventors: Dennis J. Malfer, May D. Thomas
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Patent number: 7384434Abstract: An improved process for preparing a Mannich product employs an intermediate or pre-formed triazine. The product is useful as a detergent in fuel compositions. The fuel compositions containing the Mannich product are useful for controlling intake valve deposits in engines.Type: GrantFiled: June 3, 2004Date of Patent: June 10, 2008Assignee: Afton Chemical CorporationInventors: Dennis J. Malfer, May D. Thomas, William J. Colucci
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Publication number: 20080040968Abstract: The present application is directed to detergent base products and processes for forming the detergent base products. One embodiment of the process comprises forming a bis-Mannich intermediate compound by reacting (i) at least one hydroxyl substituted aromatic ring compound having on the ring an aliphatic hydrocarbyl substituent derived from a polyolefin having a number average molecular weight of about 500 to about 3000; (ii) at least one primary amine; and (iii) at least one aldehyde. The resulting bis-Mannich intermediate compound is then reacted with at least one second amine compound chosen from primary and secondary amines to form the detergent base product.Type: ApplicationFiled: August 17, 2006Publication date: February 21, 2008Inventors: Dennis J. Malfer, Abbas Kadkhodayan, May Thomas
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Publication number: 20080034647Abstract: The use of fuel compositions comprising selected hydrocarbon oils as carriers for detergents has been found to reduce deposit formation as well as prolong the functionality of fuel injectors. The selection and utilization of particularly characterized hydrocarbon oils as detergent carriers reduces intake valve deposits and combustion chamber deposits, in comparison to conventionally used carrier fluids.Type: ApplicationFiled: August 9, 2006Publication date: February 14, 2008Inventors: Lawrence J. Cunningham, Beth A. Sloane, Dennis J. Malfer, May Duffield Thomas
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Publication number: 20070283618Abstract: A composition for use in preventing deposits in an engine and/or fouling of injectors is prepared by reacting (a) an alkenyl-substituted succinic acid having a molecular weight of about 250 to about 3000 and (b) a polyaziridine having an average molecular weight of about 250 to about 5000.Type: ApplicationFiled: June 9, 2006Publication date: December 13, 2007Inventors: Dennis J. Malfer, Scott D. Schwab, Joshua J. Bennett
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Patent number: 7112230Abstract: Injector deposits in a direct injection gasoline engine are reduced by providing as fuel for the operation of said direct injection engine a fuel composition comprising a fuel-soluble compound having the formula (I): wherein R1 and R2 are independently C1-4 alkyl, R3 is a radical of the formula CmH2m wherein m is an integer of 2 to 6, R4 and R5 are each independently (i) hydrogen (ii) C1-4 alkyl, wherein R6 is selected from the group consisting of hydrogen and C1-4 alkyls and R7 is selected from the group consisting of hydrogen and C1-30 alkyl, (iv) wherein R8 is a saturated or unsaturated, linear, branched or cyclic, C7-23 hydrocarbyl group or (v) wherein R4 and R5 together with the nitrogen atom to which they are bonded, form a cyclic ring in which further hetero atoms.Type: GrantFiled: September 14, 2001Date of Patent: September 26, 2006Assignee: Afton Chemical Intangibles LLCInventors: Dennis J. Malfer, Scott D. Schwab, Timothy J. Henly
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Patent number: 6866690Abstract: A friction modifier for combustible fuels is provided that is prepared by combining a saturated carboxylic acid and an alkylated amine. Furthermore, there also is an additive concentrate for use in fuels, especially in gasoline for internal combustion engines, comprising (a) a friction modifier comprising of a branched saturated carboxylic acid salt of an alkylated amine, such as n-butylamine isostearate; (b) a detergent package, as well as the combustible fuels containing this additive concentrate. The particular selection of friction modifier (a) enables a stable additive concentrate to be formulated providing a significant benefit in friction loss when incorporated in gasoline used to fuel an internal combustion engine, and hence an improvement in fuel economy.Type: GrantFiled: April 24, 2002Date of Patent: March 15, 2005Assignee: Ethyl CorporationInventors: Allen A. Aradi, Dennis J. Malfer, Scott D. Schwab
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Patent number: 6800103Abstract: New, highly effective detergent/dispersants for use in spark-ignition fuels comprising Mannich condensation products formed from (i) at least one substituted hydroxyaromatic compound having on the ring both (a) an aliphatic hydrocarbyl substituent derived from a polyolefin having a number average molecular weight in the range of about 500 to about 3000, and (b) a C1-4 (ii) at least one secondary amine; and (iii) at least one aldehyde are described. Carrier such as ploy(oxyalkylene) compounds further enhance the effectiveness of these Mannich condensation products in minimizing or reducing intake valve deposits and/or intake valve sticking.Type: GrantFiled: February 2, 2001Date of Patent: October 5, 2004Assignee: Ethyl CorporationInventors: Dennis J. Malfer, Andrea T. Noble, William J. Colucci, Roger M. Sheets
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Publication number: 20040010966Abstract: A method for reducing the formation of combustion chamber deposits in an engine using a friction modifier for combustible fuels is provided. The friction modifier is prepared by combining a saturated carboxylic acid and an alkylated or alkoxylated amine. The particular selection of friction modifier enables a stable additive concentrate to be formulated providing a significant decrease in CCD without increasing the incidence of IVD deposits in combustion engines running on a fuel modified with the additive concentrate.Type: ApplicationFiled: March 26, 2003Publication date: January 22, 2004Inventors: Allen A. Aradi, Dennis J. Malfer, Scott D. Schwab, William J. Colucci