Patents by Inventor Rajiv R. Singh

Rajiv R. Singh 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: 20040249010
    Abstract: This invention provides azeotrope-like compositions of 1,1,1,3,3-pentafluoropropane, 2-chloropropane and methanol that are environmentally desirable for use as refrigerants, aerosol propellants, metered dose inhalers, blowing agents for polymer foam, heat transfer media, and gaseous dielectrics.
    Type: Application
    Filed: June 4, 2003
    Publication date: December 9, 2004
    Applicant: Honeywell International, Inc.
    Inventors: Mary C. Bogdan, Gary M. Knopeck, Kane D. Cook, Rajiv R. Singh, Hang T. Pham
  • Patent number: 6806247
    Abstract: This invention provides azeotrope-like compositions of 1,1,1,2-tetrafluoroethane, 1,1,1,3,3-pentafluoropropane-245fa and water that are environmentally desirable for use as refrigerants, aerosol propellants, metered dose inhalers, blowing agents for polymer foam, heat transfer media, and gaseous dielectrics.
    Type: Grant
    Filed: June 10, 2002
    Date of Patent: October 19, 2004
    Assignee: Honeywell International Inc.
    Inventors: Mary C. Bogdan, Hang T. Pham, David J. Williams, Gary M. Knopeck, Rajiv R. Singh, Kane D. Cook
  • Patent number: 6790820
    Abstract: The present invention provides compositions comprising an HFC component and a non-HFC component consisting essentially of methanol, having boiling points that are unexpectedly low and relatively constant, and uses thereof.
    Type: Grant
    Filed: June 3, 2002
    Date of Patent: September 14, 2004
    Assignee: Honeywell International, Inc.
    Inventors: Mary C. Bogdan, Gary M. Knopeck, Hang T. Pham, Rajiv R. Singh, Kane D. Cook
  • Patent number: 6784150
    Abstract: Disclosed are compositions comprising 1,1,1,3,3-pentafluoropropane, 1,1,1,3,3-pentafluorobutane and water, said compositions are environmentally desirable for use as blowing agents for polymer foam, refrigerants, aerosol propellants, metered dose inhalers, heat transfer media, and gaseous dielectrics.
    Type: Grant
    Filed: April 16, 2002
    Date of Patent: August 31, 2004
    Assignee: Honeywell International Inc.
    Inventors: Mary C. Bogdan, Hang T. Pham, David J. Williams, Leslie Bement, Ronald Riegel, Rajiv R. Singh, Kane D. Cook, Gary M. Knopeck
  • Publication number: 20040167053
    Abstract: Disclosed are compositions and methods for cleaning contaminated articles based on the provision of a zeotropic composition comprising (a) at least one flammable solvent having a boiling point at a first pressure; (b) at least one first nonflammable solvent having a boiling point at said first pressure which is less than about said first pressure boiling point of said flammable solvent; and (c) at least one second nonflammable solvent having a boiling point at said first pressure which is greater than about the first pressure boiling point of said flammable solvent.
    Type: Application
    Filed: December 16, 2003
    Publication date: August 26, 2004
    Applicant: Honeywell International, Inc.
    Inventors: Gary Knopeck, Rajiv R. Singh, Kane Cook, Ian Shankland, Harold Kieta
  • Patent number: 6777382
    Abstract: The present invention provides compositions comprising an HFC component and a non-HFC component consisting essentially of methanol, having boiling points that are unexpectedly low and relatively constant, and uses thereof.
    Type: Grant
    Filed: June 3, 2002
    Date of Patent: August 17, 2004
    Assignee: Honeywell International Inc.
    Inventors: Mary C. Bogdan, Kane D. Cook, Hang T. Pham, Gary M. Knopeck, Rajiv R. Singh
  • Patent number: 6764990
    Abstract: This invention provides azeotrope-like compositions of 1,1,1,3,3-pentafluoropropane, 2-chloropropane and dichloroethylene that are environmentally desirable for use as refrigerants, aerosol propellants, metered dose inhalers, blowing agents for polymer foam, heat transfer media, and gaseous dielectrics.
    Type: Grant
    Filed: June 4, 2003
    Date of Patent: July 20, 2004
    Assignee: Honeywell International Inc.
    Inventors: Mary C. Bogdan, Hang T. Pham, Gary M. Knopek, Rajiv R. Singh, David J. Williams, Kane D. Cook
  • Publication number: 20040127383
    Abstract: Provided are azeotrope-like compositions comprising pentafluoropropene (HFO-1225) and a fluid selected from the group consisting of 3,3,3-trifluoropropene (“HFO-1243zf”), 1,1-difluoroethane (“HFC-152a”), trans-1,3,3,3-tetrafluoropropene (“HFO-1234ze”), and combinations of two or more thereof. Also provided are uses thereof including as refrigerants, blowing agents, sprayable compositions, flame suppressant, and the like.
    Type: Application
    Filed: October 27, 2003
    Publication date: July 1, 2004
    Inventors: Hang T. Pham, Rajiv R. Singh, David P. Wilson
  • Publication number: 20040119047
    Abstract: The use of pentafluoropropene (HFO-1225) and tetrafluoropropene (HFO-1234) in refrigeration equipment is disclosed. These materials are generally useful as refrigerants for heating and cooling, as blowing agents, as aerosol propellants, as solvent composition, and as fire extinguishing and suppressing agents.
    Type: Application
    Filed: October 27, 2003
    Publication date: June 24, 2004
    Applicant: Honeywell International, Inc.
    Inventors: Rajiv R. Singh, Hang T. Pham, David P. Wilson, Raymond H. Thomas
  • Publication number: 20040089839
    Abstract: Liquid compositions for use in compression refrigeration, air-conditioning and heat pump systems in which a fluoroalkene containing from 3 to 4 carbon atoms and at least 1 but no more than 2 double bonds is combined with an effective amount to provide lubrication of an essentially miscible organic lubricant comprised of carbon, hydrogen and oxygen and having a ratio of oxygen to carbon effective to provide a degree of miscibility with said fluoroalkene so that when up to five weight percent of lubricant is added to said fluoroalkene the refrigerant has one liquid phase at at least one temperature between −40 and +70° C. Methods for producing refrigeration and heating with the fluoroalkenes, alone or in combination with the disclosed lubricants, are also disclosed.
    Type: Application
    Filed: October 27, 2003
    Publication date: May 13, 2004
    Applicant: Honeywell International, Inc.
    Inventors: Raymond H. Thomas, Rajiv R. Singh
  • Publication number: 20040084295
    Abstract: The invention relates to azeotropic and azeotrope-like mixtures of 1,1,1,3,3-pentafluorobutane (HFC-365) and hydrogen fluoride and a process for separating the azeotrope-like mixtures. The compositions of the invention are useful as an intermediate in the production of HFC-365. The latter is useful as a nontoxic, zero ozone depleting fluorocarbon useful as a solvent, blowing agent, refrigerant, cleaning agent and aerosol to propellant.
    Type: Application
    Filed: October 14, 2003
    Publication date: May 6, 2004
    Inventors: Hang T. Pham, Rajiv R. Singh, Hsueh S. Tung
  • Publication number: 20040063843
    Abstract: Compositions comprising: (i) a coating solvent comprising a liquid carrier, and at least one fluorocarbon surface tension-reducing agent; and (ii) a coating moiety dissolved therein are described. Also described is a method of using the compositions to solution coat a surface.
    Type: Application
    Filed: July 18, 2003
    Publication date: April 1, 2004
    Applicant: Honeywell International, Inc.
    Inventors: George A. Shia, Rajiv R. Singh
  • Patent number: 6686326
    Abstract: Disclosed are azeotrope-like compositions comprising 1,1,1,3,3-pentafluorobutane, water and a hydrocarbon selected from the group consisting of n-pentane, isopentane, cyclopentane, n-hexane, and isohexane., said compositions are environmentally desirable for use as refrigerants, aerosol propellants, metered dose inhalers, blowing agents for polymer foam, heat transfer media, and gaseous dielectrics.
    Type: Grant
    Filed: June 3, 2002
    Date of Patent: February 3, 2004
    Assignee: Honeywell International Inc.
    Inventors: Mary C. Bogdan, Kane D. Cook, Hang T. Pham, Gary M. Knopeck, Rajiv R. Singh
  • Patent number: 6673264
    Abstract: The invention relates to azeotropic and azeotrope-like mixtures of 1,1,1,3,3-pentafluorobutane (HFC-365) and hydrogen fluoride and a process for separating the azeotrope-like mixtures. The compositions of the invention are useful as an intermediate in the production of HFC-365. The latter is useful as a nontoxic, zero ozone depleting fluorocarbon useful as a solvent, blowing agent, refrigerant, cleaning agent and aerosol to propellant.
    Type: Grant
    Filed: June 3, 2002
    Date of Patent: January 6, 2004
    Assignee: Honeywell International Inc.
    Inventors: Hang T. Pham, Rajiv R. Singh, Hsueh S. Tung
  • Patent number: 6673259
    Abstract: Disclosed are azeotrope-like compositions comprising 1,1,1,3,3-pentafluoropropane and at least one C3 or C4 hydrocarbon, and optionally water, said compositions are environmentally desirable for use as refrigerants, aerosol propellants, metered dose inhalers, blowing agents for polymer foam, heat transfer media, and gaseous dielectrics.
    Type: Grant
    Filed: April 12, 2002
    Date of Patent: January 6, 2004
    Assignee: Honeywell International Inc.
    Inventors: Kane D. Cook, Rajiv R. Singh, Gary M. Knopeck, Mary C. Bogdan, Hang T. Pham, Leslie Bement, David J. Williams, James M. Bowman
  • Patent number: 6670281
    Abstract: Methods for etching or removing oxide scale from a substrate by applying a composition containing a polymer and an effective amount of hydrofluoric acid and maintaining the composition on the substrate until the substrate is etched or the oxide scale is removed.
    Type: Grant
    Filed: December 30, 1998
    Date of Patent: December 30, 2003
    Assignee: Honeywell International Inc.
    Inventors: Matthew H. Luly, Rajiv R. Singh, Charles L. Redmon, Jeffrey W. McKown, Robert Pratt
  • Publication number: 20030234380
    Abstract: Provided are compositions comprising HFC-245fa and trans-1,2-dichloroethylene which exhibit relatively high solubility with conventional hydrocarbon lubricants, non-flammability, and relatively constant boiling points. Also provided are uses of such compositions.
    Type: Application
    Filed: March 14, 2003
    Publication date: December 25, 2003
    Inventors: Gary M. Knopeck, Rajiv R. Singh, Ian Shankland
  • Publication number: 20030218149
    Abstract: Disclosed are azeotrope-like compositions comprising 1,1,1,2-tetrafluoroethane and 1-chloro-1,1-difluoroethane, said compositions are environmentally desirable for use as refrigerants, aerosol propellants, metered dose inhalers, blowing agents for polymer foam, heat transfer media, and gaseous dielectrics.
    Type: Application
    Filed: May 22, 2003
    Publication date: November 27, 2003
    Applicant: Honeywell International, Inc., Morristown, NJ
    Inventors: Rajiv R. Singh, Hang T. Pham, David P. Wilson
  • Patent number: 6640841
    Abstract: Provided are methods of charging refrigerants into refrigeration systems. The present methods involve recharging a refrigerant system that contains a chlorine-containing refrigerant and a lubricant comprising the steps of (a) providing a refrigeration system comprising a chamber having a hydrocarbon-based lubricant and substantially no chlorofluorocarbon refrigerant; and (b) introducing to the system a composition comprising: (i) a refrigerant; (ii) a surfactant; and (iii) a solubilizing agent.
    Type: Grant
    Filed: August 19, 2002
    Date of Patent: November 4, 2003
    Assignee: Honeywell International Inc.
    Inventors: Raymond H. P. Thomas, Roy P. Robinson, Rajiv R. Singh, David P. Wilson
  • Patent number: 6638987
    Abstract: This invention provides azeotrope-like compositions of 1,1,1,2-tetrafluoroethane, 1,1,1,3,3-pentafluoropropane-245fa and water that are environmentally desirable for use as refrigerants, aerosol propellants, metered dose inhalers, blowing agents for polymer foam, heat transfer media, and gaseous dielectrics.
    Type: Grant
    Filed: June 10, 2002
    Date of Patent: October 28, 2003
    Assignee: Honeywell International, Inc.
    Inventors: Mary C. Bogdan, Gary M. Knopeck, Hang T. Pham, Rajiv R. Singh, David Dressel, David J. Williams