Patents by Inventor Dennis George Peiffer
Dennis George Peiffer 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: 10207249Abstract: Organosilica materials, which are a polymer of at least one independent monomer of Formula [Z1OZ2OSiCH2]3 (I), wherein Z1 and Z2 each independently represent a hydrogen atom, a C1-C4 alkyl group or a bond to a silicon atom of another monomer and at least one other monomer is provided herein. Methods of preparing and processes of using the organosilica materials, e.g., for gas separation, color removal etc., are also provided herein.Type: GrantFiled: December 11, 2015Date of Patent: February 19, 2019Assignee: EXXONMOBIL RESEARCH AND ENGINEERING COMPANYInventors: Quanchang Li, Preeti Kamakoti, David Charles Calabro, Mary Kathryn Lee, Stephen M. Cundy, Kanmi Mao, Matu J. Shah, Dennis George Peiffer, Daniel P. Leta
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Patent number: 9713788Abstract: A method is described for separating CO2 and/or H2S from a mixed gas stream by contacting the gas stream with a non-aqueous, liquid absorbent medium of a primary and/or secondary aliphatic amine, preferably in a non-aqueous, polar, aprotic solvent under conditions sufficient for sorption of at least some of the CO2. The solution containing the absorbed CO2 can then be treated to desorb the acid gas. The method is usually operated as a continuous cyclic sorption-desorption process, with the sorption being carried out in a sorption zone where a circulating stream of the liquid absorbent contacts the gas stream to form a CO2-rich sorbed solution, which is then cycled to a regeneration zone for desorption of the CO2 (advantageously at <100° C.). Upon CO2 release, the regenerated lean solution can be recycled to the sorption tower. CO2:(primary+secondary amine) adsorption molar ratios>0.5:1 (approaching 1:1) may be achieved.Type: GrantFiled: October 16, 2015Date of Patent: July 25, 2017Assignee: EXXONMOBIL RESEARCH AND ENGINEERING COMPANYInventors: David Charles Calabro, Lisa Saunders Baugh, Pavel Kortunov, Benjamin A. McCool, Michael Siskin, Dennis George Peiffer, Quanchang Li
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Publication number: 20160168174Abstract: Organosilica materials, which are a polymer of at least one independent monomer of Formula [Z1OZ2OSiCH2]3 (I), wherein Z1 and Z2 each independently represent a hydrogen atom, a C1-C4 alkyl group or a bond to a silicon atom of another monomer and at least one other monomer is provided herein. Methods of preparing and processes of using the organosilica materials, e.g., for gas separation, color removal etc., are also provided herein.Type: ApplicationFiled: December 11, 2015Publication date: June 16, 2016Applicant: ExxonMobil Research and Engineering CompanyInventors: Quanchang LI, Preeti KAMAKOTI, David Charles CALABRO, Mary Kathryn LEE, Stephen M. CUNDY, Kanmi MAO, Matu J. SHAH, Dennis George PEIFFER, Daniel P. LETA
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Publication number: 20160038872Abstract: A method is described for separating CO2 and/or H2S from a mixed gas stream by contacting the gas stream with a non-aqueous, liquid absorbent medium of a primary and/or secondary aliphatic amine, preferably in a non-aqueous, polar, aprotic solvent under conditions sufficient for sorption of at least some of the CO2. The solution containing the absorbed CO2 can then be treated to desorb the acid gas. The method is usually operated as a continuous cyclic sorption-desorption process, with the sorption being carried out in a sorption zone where a circulating stream of the liquid absorbent contacts the gas stream to form a CO2-rich sorbed solution, which is then cycled to a regeneration zone for desorption of the CO2 (advantageously at <100° C.). Upon CO2 release, the regenerated lean solution can be recycled to the sorption tower. CO2:(primary+secondary amine) adsorption molar ratios >0.5:1 (approaching 1:1) may be achieved.Type: ApplicationFiled: October 16, 2015Publication date: February 11, 2016Applicant: ExxonMobil Research and Engineering CompanyInventors: David Charles CALABRO, Lisa Saunders Baugh, Pavel Kortunov, Benjamin A. McCool, Michael Siskin, Dennis George Peiffer, Quanchang Li
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Patent number: 8088717Abstract: A compressible object is described that may be utilized in drilling mud and with a drilling system to manage the density of the drilling mud. The compressible object includes a shell that encloses an interior region. The interior region of the shell is at least partially filled with a foam. The internal pressure of the compressible object may be greater than about 200 psi (pounds per square inch) at atmospheric pressure, greater than 500 psi at atmospheric pressure, greater than 1500 psi at atmospheric pressure or more preferably greater than 2000 psi at atmospheric pressure.Type: GrantFiled: October 16, 2008Date of Patent: January 3, 2012Assignee: ExxonMobil Upstream Research CompanyInventors: Richard S. Polizzotti, Dennis George Peiffer, Ramesh Gupta, Norman M. Pokutylowicz, Barbara Carstensen, Michael J. Luton, Paul Matthew Spiecker
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Patent number: 8088716Abstract: A compressible object is described that may be utilized in drilling mud and with a drilling system to manage the density of the drilling mud. The compressible object includes a shell that encloses an interior region. Also, the compressible object has an internal pressure (i) greater than about 200 pounds per square inch at atmospheric pressure and (ii) selected for a predetermined external pressure, wherein external pressures that exceed the internal pressure reduce the volume of the compressible object and wherein the shell being designed to reduce localized strains of the compressible object during expansion and compression of the compressible object.Type: GrantFiled: October 16, 2008Date of Patent: January 3, 2012Assignee: ExxonMobil Upstream Research CompanyInventors: Richard S. Polizzotti, Dennis George Peiffer, Ramesh Gupta, Norman M. Pokutylowicz, Barbara Carstensen, Michael J. Luton, Paul Matthew Spiecker
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Patent number: 8076269Abstract: A compressible object is described that may be utilized in drilling mud and with a drilling system to manage the density of the drilling mud. The compressible object includes a shell that encloses an interior region. The shell experiences less strain when the external pressure is about equal to the internal pressure than when the external pressure is above or below a predetermined compression interval of the compressible object includes a shell that encloses an interior region.Type: GrantFiled: October 16, 2008Date of Patent: December 13, 2011Assignee: ExxonMobil Upstream Research CompanyInventors: Richard S. Polizzotti, Dennis George Peiffer, Ramesh Gupta, Norman M. Pokutylowicz, Barbara Carstensen, Michael J. Luton, Paul Matthew Spiecker
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Patent number: 7972555Abstract: Methods for fabricating compressible object are described. These compressible objects may be utilized in drilling mud and with a drilling system to manage the density of the drilling mud. The method includes selecting an architecture for a compressible object; selecting a wall material for the compressible object; and fabricating the compressible object, wherein the compressible object has a shell that encloses an interior region, and has an internal pressure (i) greater than about 200 pounds per square inch at atmospheric pressure and (ii) selected for a predetermined external pressure, wherein external pressures that exceed the internal pressure reduce the volume of the compressible object.Type: GrantFiled: October 16, 2008Date of Patent: July 5, 2011Assignee: ExxonMobil Upstream Research CompanyInventors: Richard S. Polizzotti, Dennis George Peiffer, Ramesh Gupta, Norman M. Pokutylowicz, Barbara Carstensen, Michael J. Luton, Paul Matthew Spiecker
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Publication number: 20090091053Abstract: Methods for fabricating compressible object are described. These compressible objects may be utilized in drilling mud and with a drilling system to manage the density of the drilling mud. The method includes selecting an architecture for a compressible object; selecting a wall material for the compressible object; and fabricating the compressible object, wherein the compressible object has a shell that encloses an interior region, and has an internal pressure (i) greater than about 200 pounds per square inch at atmospheric pressure and (ii) selected for a predetermined external pressure, wherein external pressures that exceed the internal pressure reduce the volume of the compressible object.Type: ApplicationFiled: October 16, 2008Publication date: April 9, 2009Inventors: Richard S. Polizzotti, Dennis George Peiffer, Ramesh Gupta, Norman M. Pokutylowicz, Barbara Carstensen, Michael J. Luton, Paul Matthew Spiecker
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Publication number: 20090090559Abstract: A compressible object is described that may be utilized in drilling mud and with a drilling system to manage the density of the drilling mud. The compressible object includes a shell that encloses an interior region. The shell experiences less strain when the external pressure is about equal to the internal pressure than when the external pressure is above or below a predetermined compression interval of the compressible object includes a shell that encloses an interior region.Type: ApplicationFiled: October 16, 2008Publication date: April 9, 2009Inventors: Richard S. Polizzotti, Dennis George Peiffer, Ramesh Gupta, Norman M. Pokutylowicz, Barbara Carstensen, Michael J. Luton, Paul Matthew Spiecker
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Publication number: 20090090558Abstract: A compressible object is described that may be utilized in drilling mud and with a drilling system to manage the density of the drilling mud. The compressible object includes a shell that encloses an interior region. Also, the compressible object has an internal pressure (i) greater than about 200 pounds per square inch at atmospheric pressure and (ii) selected for a predetermined external pressure, wherein external pressures that exceed the internal pressure reduce the volume of the compressible object and wherein the shell being designed to reduce localized strains of the compressible object during expansion and compression of the compressible object.Type: ApplicationFiled: October 16, 2008Publication date: April 9, 2009Inventors: Richard S. Polizzotti, Dennis George Peiffer, Ramesh Gupta, Norman M. Pokutylowicz, Barbara Carstensen, Michael J. Luton, Paul Matthew Spiecker
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Publication number: 20090084604Abstract: A compressible object is described that may be utilized in drilling mud and with a drilling system to manage the density of the drilling mud. The compressible object includes a shell that encloses an interior region. The interior region of the shell is at least partially filled with a foam. The internal pressure of the compressible object may be greater than about 200 psi (pounds per square inch) at atmospheric pressure, greater than 500 psi at atmospheric pressure, greater than 1500 psi at atmospheric pressure or more preferably greater than 2000 psi at atmospheric pressure.Type: ApplicationFiled: October 16, 2008Publication date: April 2, 2009Inventors: Richard S. Polizzotti, Dennis George Peiffer, Ramesh Gupta, Norman M. Pokutylowicz, Barbara Carstensen, Michael J. Luton, Paul Matthew Spiecker
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Patent number: 7067599Abstract: A copolymer comprising units derivable from (A) one or more olefins of defined chain length; and (B) one or more ethylenically unsaturated compounds different from (A). The copolymers are useful as cold flow improvers in fuel oils.Type: GrantFiled: December 2, 1999Date of Patent: June 27, 2006Assignee: Infineum International Ltd.Inventors: Robert Dryden Tack, Brid Dilworth, Dennis George Peiffer
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Patent number: 6124428Abstract: Melt processed linear polyethylenes which may optionally contain an elastomer, are shown to exhibit improved processability through the addition of certain surfactants. Among the melt processing parameters improved are reduced head pressure, reduced torque, reduced motor load, reduced or eliminated melt fracture, or combinations of these parameters. The surfactants can be chosen from a non-aromatic alkyl sulfonate or sulfate salt wherein a cation of the salt is selected from the group consisting of Na, K, Li, and other alkali cations and quaternary ammonium cations, said surfactant being essentially free of halogens.Type: GrantFiled: August 6, 1997Date of Patent: September 26, 2000Assignee: Exxon Chemical Patents, IncInventors: Joel Edward Schmieg, Thomas Craig Erderly, Dennis George Peiffer, James Joseph Chludzinski
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Patent number: 6121356Abstract: In its broadest sense of the present invention comprises an aqueous emulsion containing water, a normally thermoplastic sulfonated polymer and a plasticizer that is substantially miscible in the polymer is, non-volatile and substantially insoluble in the water phase of the emulsion.The aqueous emulsion of the present invention is formed by polymerizing a sulfonate containing monomer with at least one non-sulfonate containing monomer in the aqueous phase in the presence of a free radical initiator and in the presence of a plasticizer that is substantially miscible in the polymer, is non-volatile and substantially water insoluble.Type: GrantFiled: September 9, 1994Date of Patent: September 19, 2000Assignee: Exxon Research and Engineering CompanyInventors: Robert Dean Lundberg, Dennis George Peiffer, Robert Richard Phillips
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Patent number: 6111027Abstract: This invention relates to an adhesive composition comprising a copolymer comprising units derived from one or more macromonomers and an unsaturated acid or an unsaturated anhydride wherein the weight average molecular weight of the copolymer is at least twice the weight average molecular weight of the macromonomer, the melt index of the copolymer is 1 dg/min or more, and wherein the macromonomer:(1) has a weight average molecular weight between 500 and 100,000;(2) has at least 30% terminal unsaturation; and(3) comprises a copolymer of ethylene and at least one .alpha.-olefin, and/or a copolymer of propylene and ethylene or an .alpha.-olefin.Type: GrantFiled: October 1, 1998Date of Patent: August 29, 2000Assignee: Exxon Chemical Patents, IncInventors: Pamela J. Wright, Dennis George Peiffer, Kenneth Lewtas, Quoc Luvinh, Joseph Jacques Ripet, Anne Vera Macedo
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Patent number: 6107454Abstract: Melt processed linear polyethylenes are shown to exhibit improved processability through the addition of certain surfactants. Among the melt processing parameters improved are reduced head pressure, reduced torque, reduced motor load, reduced or eliminated melt fracture, or combinations of these parameters. The surfactants can be chosen from a non-aromatic alkyl sulfonate or sulfate salt wherein a cation of the salt is selected from the group consisting of Na, K, Li, and other alkali cations and a quaternary ammonium cations, said surfactant being essentially free of halogens.Type: GrantFiled: August 6, 1997Date of Patent: August 22, 2000Assignee: Exxon Chemical Patents, Inc.Inventors: Joel Edward Schmieg, Thomas Craig Erderly, Dennis George Peiffer, James Joseph Chludzinski
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Patent number: 6060549Abstract: Toughened nanocomposite materials are prepared based on a blend of one or more thermoplastic engineering resins, e.g., nylon, a functionalized, e.g. brominated, copolymer of a C.sub.4 -C.sub.7 isomonoolefin, e.g. isobutylene, and a para-alkylstyrene, e.g. para-methylstyrene, and further contain a uniformly dispersed exfoliated phyllosilicate layered clay, e.g., montmorillonite. The nanocomposite materials exhibit superior mechanical properties, including enhanced impact strength.Type: GrantFiled: May 20, 1997Date of Patent: May 9, 2000Assignee: Exxon Chemical Patents, Inc.Inventors: Dongming Li, Dennis George Peiffer, Chester W. Elspass, Hsien-Chang Wang
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Patent number: 6034164Abstract: A polymer nanocomposite composition having sufficiently low air permeability to be usefull as a tire inner liner, among other things, is prepared by blending a layered material with a metal processible non-ionic first polymer having a number average molecular weight greater than 50,000 g/mole and a second non-ionic polymer compatible with the first polymer and having a number average molecular weight less than that of the first polymer.Type: GrantFiled: November 6, 1998Date of Patent: March 7, 2000Assignee: Exxon Research and Engineering Co.Inventors: Chester W. Elspass, Dennis George Peiffer
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Patent number: 6015929Abstract: This invention is directed toward a method for inhibiting the formation (nucleation, growth and agglomeration) of clathrate hydrates. The method comprises adding into a mixture of hydrate forming substituents and water, an effective amount of a hydrate anti-agglomerate selected from the group consisting of anionic, cationic, non-ionic and zwitterionic hydrate anti-agglomerate. The hydrate anti-agglomerant has a polar head group and a nonpolar tail group said nonpolar tail group not exceeding 11 carbon atoms in the longest carbon chain.Type: GrantFiled: February 13, 1998Date of Patent: January 18, 2000Assignee: Exxon Research and Engineering Co.Inventors: Manese Rabeony, Dennis George Peiffer, Christine Ann Costello, Karla Schall Colle, Pamela J Wright, Larry Dalton Talley