Patents by Inventor Owen Ross Chambers
Owen Ross Chambers 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: 20120273712Abstract: Disclosed is a nonflammable refrigerant composition consisting of pentafluoroethane in an amount from 62% to 67% based on the weight of the composition, a second component that is selected from 1,1,1,2-tetrafluoroethane, 1,1,2,2-tetrafluoroethane, and mixtures thereof in an amount from 26% to 36% by weight; and an ethylenically unsaturated or saturated hydrocarbon compound that is at least 70% isobutane in an amount of from 1% to 4% by weight and up to 5% by weight based on the weight of the composition of another flurohydrocarbon. The composition optionally may further include at least one additive, lubricant or combination thereof.Type: ApplicationFiled: July 9, 2012Publication date: November 1, 2012Applicant: E I DU PONT DE NEMOURS AND COMPANYInventors: Neil André ROBERTS, Owen Ross CHAMBERS
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Patent number: 8246851Abstract: Disclosed is a nonflammable refrigerant composition consisting of pentafluoroethane in an amount from 62% to 67% based on the weight of the composition, a second component that is selected from 1,1,1,2-tetrafluoroethane, 1,1,2,2-tetrafluoroethane, and mixtures thereof in an amount from 26% to 36% by weight; and an ethylenically unsaturated or saturated hydrocarbon compound that is at least 70% isobutane in an amount of from 1% to 4% by weight and up to 5% by weight based on the weight of the composition of another fluorohydrocarbon. The composition optionally may further include at least one additive, lubricant or combination thereof.Type: GrantFiled: June 25, 2010Date of Patent: August 21, 2012Inventors: Neil André Roberts, Owen Ross Chambers
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Publication number: 20100320414Abstract: Disclosed is a nonflammable refrigerant composition consisting of pentafluoroethane in an amount from 62% to 67% based on the weight of the composition, a second component that is selected from 1,1,1,2-tetrafluoroethane, 1,1,2,2-tetrafluoroethane, and mixtures thereof in an amount from 26% to 36% by weight; and an ethylenically unsaturated or saturated hydrocarbon compound that is at least 70% isobutane in an amount of from 1% to 4% by weight and up to 5% by weight based on the weight of the composition of another fluorohydrocarbon. The composition optionally may further include at least one additive, lubricant or combination thereof.Type: ApplicationFiled: June 25, 2010Publication date: December 23, 2010Inventors: NEIL ANDRÉ ROBERTS, Owen Ross Chambers
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Patent number: 7837894Abstract: Refrigerant composition are disclosed which comprises: (a) pentafluoroethane, trifluoromethoxydifluoromethane or hexafluorocyclopropane, or a mixture of two or more thereof, in an amount of at least 75% based on the weight of the composition, (b) 1,1,1,2- or 1,1,2,2-tetrafluoroethane, trifluoromethoxypentafluoroethane, 1,1,1,2,3,3-heptafluoropropane or a mixture of two or more thereof, in an amount of from 10 to 20% by weight based on the weight of the composition and (c) an ethylenically unsaturated or saturated hydrocarbon, optionally containing one or more oxygen atoms, with a boiling point from ?50° C. to +35° C., or a mixture thereof in an amount from 1% to 4% by weight based on the weight of the composition the weight ratio of component (a):component (b) being at least 4:1.Type: GrantFiled: August 3, 2007Date of Patent: November 23, 2010Assignee: E. I. du Pont de Nemours and CompanyInventors: Neil Andre Roberts, Owen Ross Chambers
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Patent number: 7799240Abstract: Refrigerant composition are disclosed which comprises: (a) pentafluoroethane, trifluoromethoxydifluoromethane or hexafluorocyclopropane, or a mixture of two or more thereof, in an amount of at least 75% based on the weight of the composition, (b) 1,1,1,2- or 1,1,2,2-tetrafluoroethane, trifluoromethoxypentafluoroethane, 1,1,1,2,3,3-heptafluoropropane or a mixture of two or more thereof, in an amount of from 10 to 20% by weight based on the weight of the composition and (c) an ethylenically unsaturated or saturated hydrocarbon, optionally containing one or more oxygen atoms, with a boiling point from ?50° C. to +35° C., or a mixture thereof in an amount from 1% to 4% by weight based on the weight of the composition the weight ratio of component (a):component (b) being at least 4:1.Type: GrantFiled: July 12, 2007Date of Patent: September 21, 2010Assignee: E.I. du Pont de Nemours and CompanyInventors: Neil Andre Roberts, Owen Ross Chambers
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Patent number: 7771610Abstract: Disclosed is a nonflammable refrigerant composition consisting of pentafluoroethane in an amount from 62% to 67% based on the weight of the composition, a second component that is selected from 1,1,1,2-tetrafluoroethane, 1,1,2,2-tetrafluoroethane, and mixtures thereof in an amount from 26% to 36% by weight; and an ethylenically unsaturated or saturated hydrocarbon compound that is at least 70% isobutane in an amount of from 1% to 4% by weight and up to 5% by weight based on the weight of the composition of another fluorohydrocarbon. The composition optionally may further include at least one additive, lubricant or combination thereof.Type: GrantFiled: July 11, 2008Date of Patent: August 10, 2010Assignee: E.I. du Pont de Nemours and CompanyInventors: Neil Andre Roberts, Owen Ross Chambers
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Patent number: 7713434Abstract: Disclosed is a non-flammable refrigerant composition consisting of pentafluoroethane in an amount from 62% to 67% based on the weight of the composition; a second component selected from 1,1,1,2-tetrafluoroethane, 1,1,2,2-tetrafluoroethane, and mixtures thereof in an amount from 26% to 36% by weight based on the weight of the composition; and an ethylenically unsaturated or saturated hydrocarbon compound that is at least 80% isobutane in an amount of from 3% to 4% by weight of the composition. Optionally, the composition may include at least one lubricant, at least one additive or combinations thereof.Type: GrantFiled: July 11, 2008Date of Patent: May 11, 2010Assignee: E.I. du Pont de Nemours and CompanyInventors: Neil Andre Roberts, Owen Ross Chambers
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Patent number: 7648642Abstract: Refrigerant composition are disclosed which comprises: (a) pentafluoroethane, trifluoromethoxydifluoromethane or hexafluorocyclopropane, or a mixture of two or more thereof, in an amount of at least 75% based on the weight of the composition, (b) 1,1,1,2- or 1,1,2,2-tetrafluoroethane, trifluoromethoxypentafluoroethane, 1,1,1,2,3,3-heptafluoropropane or a mixture of two or more thereof, in an amount of from 10 to 20% by weight based on the weight of the composition and (c) an ethylenically unsaturated or saturated hydrocarbon, optionally containing one or more oxygen atoms, with a boiling point from ?50° C. to +35° C., or a mixture thereof in an amount from 1% to 4% by weight based on the weight of the composition the weight ratio of component (a): component (b) being at least 4:1.Type: GrantFiled: July 12, 2007Date of Patent: January 19, 2010Assignee: E.I. du Pont de Nemours and CompanyInventors: Neil Andre Roberts, Owen Ross Chambers
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Patent number: 7641810Abstract: Disclosed is a non-flammable refrigerant composition consisting of pentafluoroethane in an amount from 62-70% based on the weight of the composition selected from 1,1,1,2-tetrafluoroethane, 1,1,2,2-tetrafluoroethane, or a mixture thereof in an amount from 26 to 36% by weight based on the weight of the composition and mixture of dimethyether and n-butane in an amount of from 1-4% by weight based on the weight of the composition. Optionally, the composition may include at least one lubricant, at least one additive or combinations thereof.Type: GrantFiled: May 22, 2008Date of Patent: January 5, 2010Inventors: Neil Andre Roberts, Owen Ross Chambers
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Publication number: 20090127498Abstract: Disclosed is a non-flammable refrigerant composition consisting of pentafluoroethane in an amount from 62-70% based on the weight of the composition selected from 1,1,1,2-tetrafluoroethane, 1,1,2,2-tetrafluoroethane, or a mixture thereof in an amount from 26 to 36% by weight based on the weight of the composition and mixture of dimethyether and n-butane in an amount of from 1-4% by weight based on the weight of the composition. Optionally, the composition may include at least one lubricant, at least one additive or combinations thereof.Type: ApplicationFiled: May 22, 2008Publication date: May 21, 2009Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: NEIL ANDRE ROBERTS, Owen Ross Chambers
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Publication number: 20080272330Abstract: Disclosed is a nonflammable refrigerant composition consisting of pentafluoroethane in an amount from 62% to 67% based on the weight of the composition, a second component that is selected from 1,1,1,2-tetrafluoroethane, 1,1,2,2-tetrafluoroethane, and mixtures thereof in an amount from 26% to 36% by weight; and an ethylenically unsaturated or saturated hydrocarbon compound that is at least 70% isobutane in an amount of from 1% to 4% by weight and up to 5% by weight based on the weight of the composition of another fluorohydrocarbon. The composition optionally may further include at least one additive, lubricant or combination thereof.Type: ApplicationFiled: July 11, 2008Publication date: November 6, 2008Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Neil Andre Roberts, Owen Ross Chambers
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Publication number: 20080265204Abstract: Disclosed is a non-flammable refrigerant composition consisting of pentafluoroethane in an amount from 62% to 67% based on the weight of the composition; a second component selected from 1,1,1,2-tetrafluoroethane, 1,1,2,2-tetrafluoroethane, and mixtures thereof in an amount from 26% to 36% by weight based on the weight of the composition; and an ethylenically unsaturated or saturated hydrocarbon compound that is at least 80% isobutane in an amount of from 3% to 4% by weight of the composition. Optionally, the composition may include at least one lubricant, at least one additive or combinations thereof.Type: ApplicationFiled: July 11, 2008Publication date: October 30, 2008Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: NEIL ANDRE ROBERTS, Owen Ross Chambers
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Patent number: 7410595Abstract: Refrigerant composition are disclosed which comprises: (a) pentafluoroethane, trifluoromethoxydifluoromethane or hexafluorocyclopropane, or a mixture of two or more thereof, in an amount of at least 75% based on the weight of the composition, (b) 1,1,1,2- or 1,1,2,2-tetrafluoroethane, trifluoromethoxypentafluoroethane, 1,1,1,2,3,3-heptafluoropropane or a mixture of two or more thereof, in an amount of from 10 to 20% by weight based on the weight of the composition and (c) an ethylenically unsaturated or saturated hydrocarbon, optionally containing one or more oxygen atoms, with a boiling point from ?50° C. to +35° C., or a mixture thereof in an amount from 1% to 4% by weight based on the weight of the composition the weight ratio of component (a):component (b) being at least 4:1.Type: GrantFiled: July 16, 2007Date of Patent: August 12, 2008Assignee: E.I. Du Pont de Nemours and CompanyInventors: Neil Andre Roberts, Owen Ross Chambers
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Patent number: 6225511Abstract: Fluorinated ethers of the formula: wherein R is hydrogen, fluorine, alkyl of 1 to 6 carbon atoms, or fluoroalkyl of 1 to 6 carbon atoms, R′ is hydrogen, alkyl of 1 to 6 carbon atoms, or fluoroalkyl of 1 to 6 carbon atoms, and R″ is fluorine, alkyl of 1 to 6 carbon atoms or fluoroalkyl of 1 to 6 carbon atoms are prepared by fluorinating a corresponding ether of formula: with a solid transition metal fluoride fluorinating agent such as cobaltic fluoride.Type: GrantFiled: March 14, 2000Date of Patent: May 1, 2001Assignee: Rhone-Poulenc Chemicals Ltd.Inventors: Owen Ross Chambers, Roderic Nigel Fraser Simpson
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Patent number: 6054626Abstract: Fluorinated ethers of the formula: ##STR1## wherein R is hydrogen, fluorine, alkyl of 1 to 6 carbon atoms, or fluoroalkyl of 1 to 6 carbon atoms, R' is hydrogen, alkyl of 1 to 6 carbon atoms, or fluoroalkyl of 1 to 6 carbon atoms, and R" is fluorine, alkyl of 1 to 6 carbon atoms or fluoroalkyl of 1 to 6 carbon atoms, e.g. Desflurane, are prepared by fluorinating a corresponding ether of formula: ##STR2## with a solid transition metal fluoride fluorinating agent such as cobaltic fluoride.Type: GrantFiled: November 10, 1993Date of Patent: April 25, 2000Assignee: Rhodia LimitedInventors: Owen Ross Chambers, Roderic Nigel Fraser Simpson
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Patent number: 5717086Abstract: 2',3'-Dideoxy-3'-fluorouridines are made by reaction of a corresponding anhydronucleoside with hydrogen fluoride in the presence of an organo-iron compound.Type: GrantFiled: February 14, 1996Date of Patent: February 10, 1998Assignees: Rhone-Poulenc Chemicals Limited, The Wellcome Foundation LimitedInventors: Owen Ross Chambers, Patrick Charles Youmans, Andrew Lawrence Germain
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Patent number: 5705713Abstract: Fluoro compounds are made by reaction of an activated oxy-acid ester or cyclic ether starting material with hydrogen fluoride in the presence of an organometallic compound.Type: GrantFiled: December 12, 1995Date of Patent: January 6, 1998Assignee: Rhone-Poulenc Chemicals LimitedInventors: Owen Ross Chambers, Patrick Charles Youmans