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).

  • Publication number: 20090203865
    Abstract: 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: Application
    Filed: April 22, 2009
    Publication date: August 13, 2009
    Applicant: E . I . DU PONT DE NEMOURS AND COMPANY
    Inventors: RICHARD E. FERNANDEZ, WEIMING QIU, PAUL R. RESNICK, ROBERT CLAYTON WHELAND
  • Patent number: 7531689
    Abstract: 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: Grant
    Filed: March 22, 2007
    Date of Patent: May 12, 2009
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Victor Filippovich Cherstkov, Nina Ivanova Delyagina, Richard E. Fernandez, Viacheslav A. Petrov, Weiming Qiu, Paul R. Resnick
  • Patent number: 7276624
    Abstract: 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: Grant
    Filed: May 9, 2003
    Date of Patent: October 2, 2007
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Victor Filippovich Cherstkov, Nina Ivanova Delyagina, Richard E. Fernandez, Viacheslav A. Petrov, Paul R. Resnick
  • Publication number: 20040019237
    Abstract: 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: Application
    Filed: May 9, 2003
    Publication date: January 29, 2004
    Inventors: Victor Filippovich Cherstkov, Nina Ivanova Delyagina, Richard E. Fernandez, Viacheslav A. Petrov, Weiming Qiu, Paul R. Resnick, Robert Clayton Wheland
  • Patent number: 5565393
    Abstract: 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: Grant
    Filed: September 26, 1994
    Date of Patent: October 15, 1996
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Vinci M. Felix, Richard E. Fernandez, Charles C. Seastrom
  • Patent number: 5523499
    Abstract: 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: Grant
    Filed: December 28, 1994
    Date of Patent: June 4, 1996
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: David R. Corbin, Richard E. Fernandez, Barry A. Mahler
  • Patent number: 5449846
    Abstract: 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: Grant
    Filed: October 2, 1990
    Date of Patent: September 12, 1995
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Richard E. Fernandez
  • Patent number: 5449845
    Abstract: 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: Grant
    Filed: October 2, 1990
    Date of Patent: September 12, 1995
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Richard E. Fernandez, Wendel R. Cassel
  • Patent number: 5393438
    Abstract: 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: Grant
    Filed: June 16, 1992
    Date of Patent: February 28, 1995
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Richard E. Fernandez
  • Patent number: 5315043
    Abstract: 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: Grant
    Filed: February 5, 1992
    Date of Patent: May 24, 1994
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Richard E. Fernandez, Mark H. Krackov
  • Patent number: 5180860
    Abstract: 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: Grant
    Filed: June 28, 1990
    Date of Patent: January 19, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Richard E. Fernandez, Ralph B. Kaplan
  • Patent number: 5141654
    Abstract: 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: Grant
    Filed: November 14, 1989
    Date of Patent: August 25, 1992
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Richard E. Fernandez
  • Patent number: 5115868
    Abstract: 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: Grant
    Filed: March 20, 1991
    Date of Patent: May 26, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Alfred P. Dougherty, Jr., Richard E. Fernandez, Daniel W. Moore
  • Patent number: 5084190
    Abstract: 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: Grant
    Filed: November 14, 1989
    Date of Patent: January 28, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Richard E. Fernandez
  • Patent number: 5045634
    Abstract: 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: Grant
    Filed: June 28, 1990
    Date of Patent: September 3, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Richard E. Fernandez, William H. Gumprecht, Kaplan, Ralph B.
  • Patent number: 5040609
    Abstract: 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: Grant
    Filed: October 4, 1989
    Date of Patent: August 20, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Alfred P. Dougherty, Jr., Richard E. Fernandez, Daniel W. Moore
  • Patent number: 5001287
    Abstract: 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: Grant
    Filed: February 2, 1989
    Date of Patent: March 19, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Richard E. Fernandez, V. N. Mallikarjuna Rao
  • Patent number: 4990702
    Abstract: 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: Grant
    Filed: February 15, 1990
    Date of Patent: February 5, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Richard E. Fernandez, Wendel R. Cassel, Frederick W. Mader
  • Patent number: 4990701
    Abstract: 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: Grant
    Filed: March 20, 1990
    Date of Patent: February 5, 1991
    Assignee: E. I. DuPont de Nemours and Company
    Inventors: Wendel R. Cassel, Richard E. Fernandez, Frederick W. Mader