Patents by Inventor Richard E. Fernandez
Richard E. Fernandez 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: 20090203865Abstract: Hexafluoroisobutylene and its higher homologs are easily reacted with SO3 to give fluorosulfates of the formula CH2?C(R)CF2OSO2F, wherein R is a linear, branched or cyclic fluoroalkyl group comprised of 1 to 10 carbon atoms and may contain ether oxygen. These compounds react under mild conditions with many nucleophiles to give CH2?C(R)CF2X, where X is derived from the nucleophile. This reaction provides a route to many substituted hexafluoroisobutylenes, which copolymerize easily with other fluoro- and hydrocarbon monomers such as vinylidene fluoride and ethylene.Type: ApplicationFiled: April 22, 2009Publication date: August 13, 2009Applicant: E . I . DU PONT DE NEMOURS AND COMPANYInventors: RICHARD E. FERNANDEZ, WEIMING QIU, PAUL R. RESNICK, ROBERT CLAYTON WHELAND
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Patent number: 7531689Abstract: Hexafluoroisobutylene and its higher homologs are easily reacted with SO3 to give fluorosulfates of the formula CH2?C(R)CF2OSO2F, wherein R is a linear branched or cyclic fluoroalkyl group comprised of 1 to 10 carbon atoms and may contain ether oxygen. These compounds react under mild conditions with many nucleophiles to give CH2?C(R)CF2X, where X is derived from the nucleophile. This reaction provides a route to many substituted hexafluoroisobutylenes, which copolymerize easily with other fluoro- and hydrocarbon monomers such as vinylidene fluoride and ethylene.Type: GrantFiled: March 22, 2007Date of Patent: May 12, 2009Assignee: E.I. du Pont de Nemours and CompanyInventors: Victor Filippovich Cherstkov, Nina Ivanova Delyagina, Richard E. Fernandez, Viacheslav A. Petrov, Weiming Qiu, Paul R. Resnick
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Patent number: 7276624Abstract: Hexafluoroisobutylene and its higher homologs are easily reacted with SO3 to give fluorosulfates of the formula CH2?C(R)CF2OSO2F, wherein R is a linear, branched or cyclic fluoroalkyl group comprised of 1 to 10 carbon atoms and may contain ether oxygen. These compounds react under mild conditions with many nucleophiles to give CH2?C(R)CF2X, where X is derived from the nucleophile. This reaction provides a route to many substituted hexafluoroisobutylenes, which copolymerize easily with other fluoro- and hydrocarbon monomers such as vinylidene fluoride and ethylene.Type: GrantFiled: May 9, 2003Date of Patent: October 2, 2007Assignee: E. I. du Pont de Nemours and CompanyInventors: Victor Filippovich Cherstkov, Nina Ivanova Delyagina, Richard E. Fernandez, Viacheslav A. Petrov, Paul R. Resnick
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Publication number: 20040019237Abstract: Hexafluoroisobutylene and its higher homologs are easily reacted with SO3 to give fluorosulfates of the formula CH2═C(R)CF2OSO2F, wherein R is a linear, branched or cyclic fluoroalkyl group comprised of 1 to 10 carbon atoms and may contain ether oxygen. These compounds react under mild conditions with many nucleophiles to give CH2═C(R)CF2X, where X is derived from the nucleophile. This reaction provides a route to many substituted hexafluoroisobutylenes, which copolymerize easily with other fluoro- and hydrocarbon monomers such as vinylidene fluoride and ethylene.Type: ApplicationFiled: May 9, 2003Publication date: January 29, 2004Inventors: Victor Filippovich Cherstkov, Nina Ivanova Delyagina, Richard E. Fernandez, Viacheslav A. Petrov, Weiming Qiu, Paul R. Resnick, Robert Clayton Wheland
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Patent number: 5565393Abstract: Process is disclosed for preparing a highly fluorinated alkane by contacting halogenated alkenes or alkanes with hydrogen fluoride in the presence of a catalyst which produces a super acid environment. Also, performing the fluorination process by using equipment having a corrosion resistant surface. The corrosion resistant surface may be provided by explosively cladding a corrosion resistant material onto a base metal.Type: GrantFiled: September 26, 1994Date of Patent: October 15, 1996Assignee: E. I. Du Pont de Nemours and CompanyInventors: Vinci M. Felix, Richard E. Fernandez, Charles C. Seastrom
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Patent number: 5523499Abstract: A process is disclosed for purifying a hexafluoroethane product containing CClF.sub.3 and/or CHF.sub.3 impurities which comprises the step of contacting the product with a sorbent for said impurities selected from activated carbons and inorganic (i.e. zeolite) molecular sieves. Also disclosed is an improvement to a process for producing CF.sub.3 CF.sub.3 wherein CClF.sub.3 and/or CHF.sub.3 impurities are removed from the product utilizing said sorbents.Type: GrantFiled: December 28, 1994Date of Patent: June 4, 1996Assignee: E. I. Du Pont de Nemours and CompanyInventors: David R. Corbin, Richard E. Fernandez, Barry A. Mahler
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Patent number: 5449846Abstract: A process for reducing the content of unsaturated impurities in saturated fluorohalocarbons and fluorohalohydrocarbons by contacting the impure saturated fluorohalocarbon and/or fluorohalohydrocarbon in a substantially dry fluid state with a substantially dry amorphous solid metal oxide composition consisting essentially of cupric oxide, cobaltic oxide, silver oxide, manganese dioxide, or a mixture of any two or more thereof, at an effective temperature up to about 300.degree. C.Type: GrantFiled: October 2, 1990Date of Patent: September 12, 1995Assignee: E. I. du Pont de Nemours and CompanyInventor: Richard E. Fernandez
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Patent number: 5449845Abstract: A process for reducing the content of unsaturated impurities in saturated fluorohalocarbons and fluorohalohydrocarbons by contacting the impure saturated fluorohalocarbon and/or fluorohalohydrocarbon in a substantially dry fluid state with a substantially dry amorphous solid metal oxide composition consisting essentially of cupric oxide, cobaltic oxide, silver oxide, manganese dioxide, or a mixture of any two or more thereof, at an effective temperature up to about 300.degree. C.Type: GrantFiled: October 2, 1990Date of Patent: September 12, 1995Assignee: E. I. Du Pont de Nemours and CompanyInventors: Richard E. Fernandez, Wendel R. Cassel
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Patent number: 5393438Abstract: A process for extinguishing, preventing and controlling fires using a composition containing at least one fluoro-substituted propane selected from the group of 2,2-dichloro-1,1,1-trifluoroethane (CHCl.sub.2 CF.sub.3), 2-chloro-1,1,1,2-tetrafluoroethane (CHClFCF.sub.3), and 1,1,1,2-tetrafluoroethane (CH.sub.2 FCF.sub.3), and mixtures thereof is disclosed. The fluoropropanes can be used in open or enclosed areas with little or no effect on the ozone in the stratosphere and with little effect on the global warming process.Type: GrantFiled: June 16, 1992Date of Patent: February 28, 1995Assignee: E. I. Du Pont de Nemours and CompanyInventor: Richard E. Fernandez
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Patent number: 5315043Abstract: A process for halogen exchange fluorination or fluoro-denitration of aromatic compounds having at least one replaceable non-fluorine halogen or nitro substituent with an anhydrous substantially molten alkali metal acid fluoride composition wherein the alkali metal is potassium, rubidium or cesium.Type: GrantFiled: February 5, 1992Date of Patent: May 24, 1994Assignee: E. I. Du Pont de Nemours and CompanyInventors: Richard E. Fernandez, Mark H. Krackov
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Patent number: 5180860Abstract: A process for the dehydrohalogenation of saturated hydrogen-containing polyhalocarbons using liquid alkali metal acid fluoride and/or alkali metal fluoride compositions to form haloolefins.Type: GrantFiled: June 28, 1990Date of Patent: January 19, 1993Assignee: E. I. Du Pont de Nemours and CompanyInventors: Richard E. Fernandez, Ralph B. Kaplan
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Patent number: 5141654Abstract: A process for extinguishing, preventing and controlling fires using a composition containing at least one fluoro-substituted ethane selected from the group of CF.sub.3 --CHF.sub.2, CHF.sub.2 --CHF.sub.2, CF.sub.3 --CH.sub.2 F, CF.sub.3 --CHFCl, CF.sub.2 Cl--CHF.sub.2, CF.sub.3 --CHCl.sub.2, CF.sub.2 Cl--CHFCl, CFCl.sub.2 --CHF.sub.2, and CHFCl--CHFCl is disclosed. The ethane can be used in open or enclosed areas with little or no effect on the ozone in the stratosphere and with little effect on the global warming process.Type: GrantFiled: November 14, 1989Date of Patent: August 25, 1992Assignee: E. I. du Pont de Nemours and CompanyInventor: Richard E. Fernandez
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Patent number: 5115868Abstract: A process for extinguishing, preventing and/or controlling fires using a composition containing CHF.sub.3 is disclosed. CHF.sub.3 can be used in volume percentages with air as high as 80% without adversely affecting mammalian habitation, with no effect on the ozone in the stratosphere and with little effect on the global warming process.Type: GrantFiled: March 20, 1991Date of Patent: May 26, 1992Assignee: E. I. Du Pont de Nemours and CompanyInventors: Alfred P. Dougherty, Jr., Richard E. Fernandez, Daniel W. Moore
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Patent number: 5084190Abstract: A process for extinguishing, preventing and controlling fires using a composition containing at least one fluoro-substituted propane selected from the group of CF.sub.3 --CHF--CF.sub.3, CF.sub.3 --CF.sub.2 --CHF.sub.2, CF.sub.3 --CFH--CF.sub.2 H, CF.sub.3 --CH.sub.2 --CF.sub.3, CF.sub.3 --CF.sub.2 --CH.sub.2 F, CHF.sub.2 --CF.sub.2 --CHF.sub.2, CF.sub.3 --CF.sub.2 --CHCl.sub.2, CHFCl--CF.sub.2 --CClF.sub.2, CHF.sub.2 --CCl.sub.2 --CF.sub.3, CF.sub.3 --CHCl--CClF.sub.2, CHF.sub.2 --CF.sub.2 --CHClF, CF.sub.3 --CR.sub.2 --CH.sub.2 Cl, CClF.sub.2 --CF.sub.2 --CH.sub.2 F, CF.sub.3 --CH.sub.2 --CClF.sub.2, CHClF--CR.sub.2 --CF.sub.3, CHF.sub.2 --CF.sub.2 --CF.sub.2 Cl, CF.sub.3 --CHCl--CF.sub.3, CF.sub.3 --CHF--CF.sub.2 Cl, and CHF.sub.2 --CFCl--CF.sub.3 is disclosed. The fluoropropanes can be used in open or enclosed areas with little or no effect on the ozone in the stratosphere and with little effect on the global warming process.Type: GrantFiled: November 14, 1989Date of Patent: January 28, 1992Assignee: E. I. Du Pont de Nemours and CompanyInventor: Richard E. Fernandez
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Patent number: 5045634Abstract: A process for fluorination by contacting a haloolefin with molten alkali metal acid fluoride to provide a fluorinated saturated or unsaturated hydrocarbon having at least one more fluorine than the starting haloolefin.Type: GrantFiled: June 28, 1990Date of Patent: September 3, 1991Assignee: E. I. Du Pont de Nemours and CompanyInventors: Richard E. Fernandez, William H. Gumprecht, Kaplan, Ralph B.
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Patent number: 5040609Abstract: A process for extinguishing, preventing and controlling fires using a composition containing CHF.sub.3 is disclosed. CHF.sub.3 can be used in volume percentages with air as high as 80% without adversely affecting mammalian habitation, with no effect on the ozone in the stratosphere and with little effect on the global warming process.Type: GrantFiled: October 4, 1989Date of Patent: August 20, 1991Assignee: E. I. Du Pont de Nemours and CompanyInventors: Alfred P. Dougherty, Jr., Richard E. Fernandez, Daniel W. Moore
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Patent number: 5001287Abstract: A process for treating an impure mixture consisting essentially of at least one olefinic impurity and at least one saturated halocarbon selected from fluorocarbons and fluorohydrocarbons by contacting the mixture with a source of hydrogen in the presence of a hydrogenation catalyst, whereby the olefinic impurity is converted to a hydrogenated form thereof, to produce a treated mixture consisting essentially of the hydrogenated form of the olefinic impurity or impurities and the saturated halocarbon or halocarbons from the impure mixture.Type: GrantFiled: February 2, 1989Date of Patent: March 19, 1991Assignee: E. I. Du Pont de Nemours and CompanyInventors: Richard E. Fernandez, V. N. Mallikarjuna Rao
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Patent number: 4990702Abstract: A process for halogen exchange fluorination by contacting a halocarbon having a replaceable halogen other than fluorine with CsF or RbF.multidot.nHF wherein n is 0.5-3 to provide a fluorinated hydrocarbon having at least one more fluorine than the starting halocarbon and, optionally, regenerating the MF.multidot.nHF with additional HF, or in a continuous process, with excess HF in the feed.Type: GrantFiled: February 15, 1990Date of Patent: February 5, 1991Assignee: E. I. Du Pont de Nemours and CompanyInventors: Richard E. Fernandez, Wendel R. Cassel, Frederick W. Mader
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Patent number: 4990701Abstract: A process for halogen exchange fluorination by contacting a halocarbon having a replaceable halogen other than fluorine with KF.nHF wherein n is 0.5-3 to provide a fluorinated hydrocarbon having at least one more fluorine than the starting halocarbon and, optionally, regenerating the KF.nHF with additional HF, or in a continuous process, with excess HF in the feed.Type: GrantFiled: March 20, 1990Date of Patent: February 5, 1991Assignee: E. I. DuPont de Nemours and CompanyInventors: Wendel R. Cassel, Richard E. Fernandez, Frederick W. Mader