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).

  • Compositions comprising tetrafluoropropene and carbon dioxide
    Patent number: 7629306
    Abstract: Disclosed are compositions useful in a wide variety of applications, including heat transfer fluids which possess a highly desirable and unexpectedly superior combination of properties, and heat transfer systems and methods based on these fluids. The preferred heat transfer fluid comprises from about 1 to about 40 percent, on a weight basis, of carbon dioxide (CO2) and from about 99 to about 60 percent, on a weight basis, of a compound having the Formula I XCFzR3-z (I), where X is a C2 or a C3 unsaturated, substituted or unsubstituted, alkyl radical, each R is independently Cl, F, Br, I or H, and z is 1 to 3. A preferred compound of Formula I is tetrafluoropropene, particularly 1,1,1,3-tetrafluoropropene and/or 1,1,1,3-tetrafluoropropene.
    Type: Grant
    Filed: April 29, 2005
    Date of Patent: December 8, 2009
    Assignee: Honeywell International Inc.
    Inventors: Ian Shankland, Rajiv R. Singh
  • Methods of replacing refrigerant
    Patent number: 7622435
    Abstract: Provided are azeotrope-like compositions comprising tetrafluoropropene and trifluoroiodomethane and uses thereof, including use in refrigerant compositions, refrigeration systems, blowing agent compositions, and sprayable compositions, including aerosol propellants.
    Type: Grant
    Filed: April 18, 2005
    Date of Patent: November 24, 2009
    Assignee: Honeywell International Inc.
    Inventors: David P. Wilson, Hang T. Pham, Rajiv R. Singh, Raymond H. Thomas
  • Azeotrope-Like Compositions of Tetrafluoropropene and Hydrofluorocarbons
    Publication number: 20090285764
    Abstract: Provided are azeotrope-like compositions comprising tetrafluoropropene and hydrofluorocarbons and uses thereof, including use in refrigerant compositions, refrigeration systems, blowing agent compositions, and aerosol propellants.
    Type: Application
    Filed: July 28, 2009
    Publication date: November 19, 2009
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: RAJIV R. SINGH, HANG T. PHAM, GARY KNOPECK, LOUIS E. HERENA, JEREMY N. DIRINGER
  • Compositions Containing Fluorine Substituted Olefins
    Publication number: 20090278076
    Abstract: Disclosed are the use of fluorine substituted olefins, including tetra- and penta-fluoropropenes, in a variety of applications, including connection with blowing agents, foams, foamable compositions, foaming methods, heat transfer compositions and methods, propellants, and solvating methods.
    Type: Application
    Filed: March 26, 2009
    Publication date: November 12, 2009
    Applicant: HONEYWELL INTERNATIONAL, INC.
    Inventors: Rajiv R. Singh, Hang T. Pham, Ian Shankland, David P. Wilson, Gary Knopack, David J. Williams
  • BLOWING AGENTS FOR POLYMERIC FOAMS
    Publication number: 20090270522
    Abstract: Provided are foam blowing agents comprising one or more chlorofluoroolefins selected from 1,2-dichloro-1,2-difluoroethene, 3,3-dichloro-3-fluoropropene, 2-chloro-1,1,1,3,4,4,4-heptafluoro-2-butene, and 2-chloro-1,1,1,4,4,4-hexafluoro-2-butene, as well as foams produced therefrom.
    Type: Application
    Filed: April 23, 2009
    Publication date: October 29, 2009
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Rajiv R. Singh, Ian Shankland, James M. Bowman, David J. Williams
  • Azeotropic or azeotropic-like compositions of 1,1,1-trifuoroethane and 1-chloro-2,2,2-trifluoroethane
    Patent number: 7608574
    Abstract: Azeotropic or azeotropic-like compositions of 1,1,1-trifluoroethane (HFC-143a) and 1-chloro-2,2,2-trifluoroethane (R-133a).
    Type: Grant
    Filed: August 17, 2006
    Date of Patent: October 27, 2009
    Assignee: Honeywell International Inc.
    Inventors: Stephen A. Cottrell, Hang T. Pham, Rajiv R. Singh, Hseuhsung Tung
  • Methods of replacing refrigerant
    Patent number: 7605117
    Abstract: Provided are azeotrope-like compositions comprising tetrafluoropropene and pentafluoropropene and uses thereof, including use in refrigerant compositions, blowing agent compositions, foamable compositions, foams, sterilant compositions, sprayable compositions, and systems and methods using same.
    Type: Grant
    Filed: April 18, 2005
    Date of Patent: October 20, 2009
    Assignee: Honeywell International Inc.
    Inventors: David P. Wilson, Hang T. Pham, Rajiv R. Singh, Raymond H. Thomas, David Nalewajek
  • AZEOTROPIC COMPOSITIONS OF 2-CHLORO-3,3,3-TRIFLUOROPROPENE (HCFC-1233xf), 2-CHLORO-1,1,1,2-TETRAFLUOROPROPANE (HCFC-244bb), AND HYDROGEN FLUORIDE (HF)
    Publication number: 20090256110
    Abstract: Provided are ternary azeotropic and azeotrope-like compositions of 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf), 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb), and hydrogen fluoride (HF). Such azeotropic and azeotrope-like compositions are useful as intermediates in the production of 2,3,3,3-tetrafluoropropene (HFO-1234yf).
    Type: Application
    Filed: March 18, 2009
    Publication date: October 15, 2009
    Inventors: DANIEL C. MERKEL, Konstantin A. Pokrovski, Hsuehsung Tung, Hang T. Pham, Rajiv R. Singh
  • Use of molecular sieves for the removal of HFC-23 from fluorocarbon products
    Patent number: 7597744
    Abstract: Use of molecular sieves to reduce the amount of trifluoromethane (HFC-23) present in a mixture of HFC-23 with other materials, particularly from mixtures containing HFC-23 and trifluoroiodomethane (CF3I).
    Type: Grant
    Filed: July 12, 2006
    Date of Patent: October 6, 2009
    Assignee: Honeywell International Inc.
    Inventors: Raymond H. Thomas, Rajiv R. Singh, Thomas W. Morris, Roy P. Robinson
  • Azeotrope-like compositions of tetrafluoropropenes and bromofluoropropenes
    Patent number: 7597818
    Abstract: Mixtures of tetrafluoropropenes with bromofluoropropenes provide compositions that have boiling points within an acceptable range, have good chemical stability, low GWP and are essentially non-flammable.
    Type: Grant
    Filed: February 27, 2007
    Date of Patent: October 6, 2009
    Assignee: Honeywell International Inc.
    Inventors: Rajiv R Singh, David P Wilson, Ian Shankland, Hang T Pham
  • AZEOTROPE-LIKE COMPOSITIONS OF 2-CHLORO-3,3,3-TRIFLUOROPROPENE (HCFC-1233xf) AND 2-CHLORO-1,1,1,2-TETRAFLUOROPROPANE (HCFC-244bb)
    Publication number: 20090242832
    Abstract: Provided are azeotropic and azeotrope-like compositions of 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf) and 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb). Such azeotropic and azeotrope-like compositions are useful as intermediates in the production of 2,3,3,3-tetrafluoropropene (HFO-1234yf).
    Type: Application
    Filed: March 17, 2009
    Publication date: October 1, 2009
    Inventors: HANG T. PHAM, RAJIV R. SINGH, HSUEHSUNG TUNG, KONSTANTIN A. POKROVSKI, DANIEL C. MERKEL
  • Azeotrope-Like Composition of 2-Chloro-3,3,3-Trifluoropropene (HCFC-1233xf) and Hydrogen Fluoride (HF)
    Publication number: 20090224207
    Abstract: Provided are azeotropic and azeotrope-like compositions of 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf) and hydrogen fluoride (HF). Such azeotropic and azeotrope-like compositions are useful as intermediates in the production of 2,3,3,3-tetrafluoropropene (HFO-1234yf).
    Type: Application
    Filed: March 3, 2009
    Publication date: September 10, 2009
    Inventors: Hang T. Pham, Daniel C. Merkel, Konstantin A. Pokrovski, HsuehSung Tung, Rajiv R. Singh
  • Azeotrope-Like Composition of 2-Chloro-3,3,3-Trifluoropropene (HCFC-1233xf) and Hydrogen Fluoride (HF)
    Publication number: 20090227822
    Abstract: Provided are azeotropic and azeotrope-like compositions of 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf) and hydrogen fluoride (HF). Such azeotropic and azeotrope-like compositions are useful as intermediates in the production of 2,3,3,3-tetrafluoropropene (HFO-1234yf).
    Type: Application
    Filed: March 3, 2009
    Publication date: September 10, 2009
    Inventors: Hang T. Pham, Daniel C. Merkel, Konstantin A. Pokrovski, HsuehSung Tung, Rajiv R. Singh
  • Azeotrope-Like Composition of 2-Chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb) and Hydrogen Fluoride (HF)
    Publication number: 20090211988
    Abstract: Provided are azeotropic and azeotrope-like compositions of 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb) and hydrogen fluoride (HF). Such azeotropic and azeotrope-like compositions are useful as intermediates in the production of 2,3,3,3-tetrafluoropropene (HFO-1234yf).
    Type: Application
    Filed: February 10, 2009
    Publication date: August 27, 2009
    Inventors: Hang T. Pham, Rajiv R. Singh, HsuehSung Tung, Konstantin A. Pokrovski, Daniel C. Markel
  • Essentially non-flammable low global warming compositions
    Patent number: 7563384
    Abstract: Mixtures of heptafluorobutene with tetrafluoropropenes provide compositions that have boiling points within an acceptable range, have good chemical stability, low GWP and are preferably essentially non-flammable.
    Type: Grant
    Filed: July 28, 2006
    Date of Patent: July 21, 2009
    Assignee: Honeywell International Inc.
    Inventors: Raymond H. Thomas, Hang T. Pham, Rajiv R. Singh
  • AZEOTROPE-LIKE COMPOSITIONS OF PENTAFLUOROPROPENE AND 1,1,1,2,2-PENTAFLUOROPROPANE
    Publication number: 20090151365
    Abstract: The present invention provides azeotrope-like compositions of 1,1,1,2,2-pentafluoropropane (HFC-245cb) with either the Z isomer of 1,1,1,2,3-pentafluoropropene (HFO-1225yeZ) alone or with mixtures of the E and Z isomers of 1,1,1,2,3-pentafluoropropene (HFO-1225 yeZ and HFO-1225 yeE) and uses thereof, including use in refrigerant compositions, refrigeration systems, blowing agent compositions, and aerosol propellants, and in process for separating azeotrope-like mixtures.
    Type: Application
    Filed: December 13, 2007
    Publication date: June 18, 2009
    Inventors: Hang T. Pham, Ryan J. Hulse, Rajiv R. Singh
  • AZEOTROPE-LIKE COMPOSITIONS OF 1,1,2,3,3-PENTAFLUOROPROPENE
    Publication number: 20090156702
    Abstract: The invention pertains to azeotrope-like compositions of 1,1,2,3,3-pentafluoropropene (HFC-1225yc) and any one of 1,1,1,2-tetrafluoropropene (HFC-1234yf) or the Z-isomer of 1,1,1,2,3-pentafluoropropene (HFC-1225yeZ), and uses thereof, including use in refrigerant compositions, refrigeration systems, blowing agent compositions, and aerosol propellants.
    Type: Application
    Filed: December 13, 2007
    Publication date: June 18, 2009
    Inventors: Ryan J. Hulse, Hang T. Pham, Rajiv R. Singh
  • Azeotropic fumigant compositions of methyl iodide
    Patent number: 7544306
    Abstract: Azeotropic and azeotrope-like compositions of methyl iodide and at least one fluorocarbon or hydrofluorocarbon such as 1,1,1,3,3-pentafluoropropane (HFC-245fa). The compositions are present as a gas, at temperatures of about 30° C. or below. The inventive compositions serve as a non-ozone-depleting gaseous fumigant which is useful in a variety of applications, in place of methyl bromide. These compositions serve as a drop-in replacement for gaseous methyl bromide, providing the benefits of a methyl iodide fumigant while also utilizing existing methyl bromide equipment.
    Type: Grant
    Filed: February 16, 2007
    Date of Patent: June 9, 2009
    Assignee: Honeywell International Inc.
    Inventors: Andrew J. Poss, Rajiv R. Singh, Hang T. Pham
  • HYDROFLUOROCARBON/TRIFLUOROIODOMETHANE/ HYDROCARBONS REFRIGERANT COMPOSITIONS
    Publication number: 20090127497
    Abstract: A composition comprising from about 40 weight percent to about 99.9 weight percent of at least one C1-C5 hydrofluorocarbon, from about 0.1 weight percent to about 50 weight percent of CF3I, and from about 0.1 weight percent to about 10 weight percent of at least one C1-C6 hydrocarbon and the use of these composition for in methods of the recharging of refrigeration systems.
    Type: Application
    Filed: November 16, 2007
    Publication date: May 21, 2009
    Inventors: Mark W. Spatz, Raymond H. Thomas, Rajiv R. Singh, Samuel F. Yana Motta, David P. Wilson, Elizabet del Carmen Vera Becerra
  • Compositions containing fluorine substituted olefins
    Patent number: 7534366
    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: Grant
    Filed: October 27, 2003
    Date of Patent: May 19, 2009
    Assignee: Honeywell International Inc.
    Inventors: Rajiv R. Singh, Hang T. Pham, David P. Wilson, Raymond H. Thomas, Ian Shankland