Patents by Inventor Hang T. Pham

Hang T. Pham 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).

  • Azeotrope-like compositions of tetrafluoropropene and hydrofluorocarbons
    Patent number: 8741829
    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: Grant
    Filed: March 26, 2012
    Date of Patent: June 3, 2014
    Assignee: Honeywell International Inc.
    Inventors: Rajiv R. Singh, Hang T. Pham, Gary Knopeck
  • Azeotrope and azeotrope-like compositions useful for the production of haloolefins
    Patent number: 8741828
    Abstract: The present invention pertains to ternary azeotrope and azeotrope-like composition including 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf), HF, and either 1,1,2,3-tetrachloropropene (TCP) or 1,1,1,2,2-pentafluoropropane (HFC-245cb). The present invention also relates to binary azeotropes of 2,3,3,3-tetrachloropropene and HF. Such azeotropic and azeotrope-like compositions are useful as intermediates in the production of 2,3,3,3-tetrafluoropropene (HFO-1234yf).
    Type: Grant
    Filed: January 23, 2012
    Date of Patent: June 3, 2014
    Assignee: Honeywell International Inc.
    Inventors: Ryan Hulse, Hang T. Pham, Hsueh Sung Tung, Konstantin Pokrovski, Daniel C. Merkel
  • Azeotrope-like compositions comprising 1-chloro-3,3,3-trifluoropropene
    Patent number: 8734671
    Abstract: An azeotrope-like mixture consisting essentially of a binary azeotrope-like mixture consisting essentially of trans-1-chloro-3,3,3-trifluoropropene (trans-HFO-1233zd) and a second component selected from the group consisting of 2,3,3,3-tetrafluoropropene (HFO-1234yf) and trans-1,3,3,3-tetrafluoropropene (trans-HFO-1234ze), and combinations of these and various uses thereof.
    Type: Grant
    Filed: November 15, 2011
    Date of Patent: May 27, 2014
    Assignee: Honeywell International Inc.
    Inventors: Ryan Hulse, Rajiv R. Singh, Hang T. Pham
  • POLYMERIZATION OF MONOMERS USING FLUORINATED PROPYLENE SOLVENTS
    Publication number: 20140128561
    Abstract: The present invention relates to the polymerization and copolymerization of monomers in the presence of fluorinated propylene solvents. More particularly, the present invention relates to the use of polymerization mediums suitable to polymerize one or more monomers to form polymers and/or copolymers, with a tetrafluoropolypropylene being used as a solvent or diluent for the one or more monomers.
    Type: Application
    Filed: March 13, 2013
    Publication date: May 8, 2014
    Applicant: Honeywell International, Inc.
    Inventors: Raymond H. THOMAS, Hang T. Pham, Rajiv R. Singh
  • AZEOTROPES OF ISOBUTYLENE WITH FLUORO-OLEFINS
    Publication number: 20140128559
    Abstract: Azeotropic or azeotrope-like compositions of the present invention include trans-1,3,3,3-tetrafluoroprop-1-ene and isobutylene. The azeotropic or azeotrope-like compositions can be used in polymerization processes, including slurry polymerization processes.
    Type: Application
    Filed: March 13, 2013
    Publication date: May 8, 2014
    Applicant: Honeywell International, Inc.
    Inventors: Raymond H. Thomas, Hang T. Pham, Rajiv R. Singh
  • Azeotrope-like compositions comprising 1-chloro-3,3,3-trifluoropropene
    Patent number: 8703006
    Abstract: An azeotrope-like mixture consisting essentially of chlorotrifluoropropene and at least one component selected from the group consisting of a C1-C3 alcohol, a C5-C6 hydrocarbon, a halogenated hydrocarbon, methylal, methyl acetone, water, nitromethane, and combinations thereof.
    Type: Grant
    Filed: November 17, 2011
    Date of Patent: April 22, 2014
    Assignee: Honeywell International Inc.
    Inventors: Rajat Basu, Leslie Bement, Kane Cook, Ryan Hulse, Gary Knopeck, Hang T. Pham, Rajiv R. Singh, David J. Williams
  • COMPOSITIONS CONTAINING TETRAFLUOROPROPENE AND CARBON DIOXIDE
    Publication number: 20140107242
    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: Application
    Filed: December 5, 2013
    Publication date: April 17, 2014
    Applicant: Honeywell International Inc.
    Inventors: RAJIV R. SINGH, HANG T. PHAM, IAN SHANKLAND
  • AZEOTROPE-LIKE COMPOSITIONS OF TETRAFLUOROPROPENE AND HYDROFLUOROCARBONS
    Publication number: 20140077124
    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: November 19, 2013
    Publication date: March 20, 2014
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: RAJIV R. SINGH, Hang T. Pham, Gary M. Knopeck
  • Azeotrope-Like Compositions of Pentafluoroethane and Trifluoroiodomethane
    Publication number: 20140048737
    Abstract: Provided are azeotrope-like compositions comprising heptafluoropropane and trifluoroiodomethane and uses thereof, including use in refrigerant compositions, refrigeration systems, blowing agents, fire suppressant compositions, and aerosol propellants.
    Type: Application
    Filed: October 28, 2013
    Publication date: February 20, 2014
    Applicant: Honeywell International Inc.
    Inventors: Rajiv Ratna Singh, Hang T. Pham, Robert G. Richard
  • Azeotrope-like composition of hexafluoropropane, hexafluoropropene and hydrogen fluoride
    Patent number: 8653311
    Abstract: The present invention relates to an azeotropic or azeotrope-like mixture consisting essentially of 1,1,1,2,3,3-hexafluoropropane, hexafluoropropene and hydrogen fluoride.
    Type: Grant
    Filed: April 11, 2013
    Date of Patent: February 18, 2014
    Assignee: Honeywell International Inc.
    Inventors: Ryan Hulse, Hang T. Pham, Rajiv R. Singh, Hsueh S. Tung, Daniel C. Merkel, Konstantin A. Pokrovski
  • AZEOTROPE-LIKE COMPOSITION OF 2-CHLORO-3,3,3-TRIFLUOROPROPENE (HCFC-1233XF) AND HYDROGEN FLUORIDE (HF)
    Publication number: 20140012052
    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: September 10, 2013
    Publication date: January 9, 2014
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: HANG T. PHAM, DANIEL C. MERKEL, KONSTANTIN A. POKROVSKI, HSUEH S. TUNG, RAJIV R. SINGH
  • Compositions containing tetrafluoropropene and carbon dioxide
    Patent number: 8623808
    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: August 5, 2011
    Date of Patent: January 7, 2014
    Assignee: Honeywell International Inc.
    Inventors: Rajiv R. Singh, Hang T. Pham, Ian Shankland
  • POLYMER PROCESSING SIMPLIFICATION
    Publication number: 20140005335
    Abstract: A process for the preparation of a fluoroolefin polymer from an azeotropic mixture of monomers having a constant composition, the process including the step of: contacting in a reaction zone: (i) an initiator; and (ii) an azeotropic mixture of monomers including at least one fluoroolefin and, optionally, at least one ethylenically unsaturated comonomer capable of copolymerizing therewith; wherein the contacting is carried out at a temperature, pressure and length of time sufficient to produce the fluoroolefin polymer.
    Type: Application
    Filed: September 5, 2013
    Publication date: January 2, 2014
    Applicant: Honeywell International Inc.
    Inventors: George J. Samuels, Gregory J. Shafer, Hang T. Pham
  • Azeotrope-like compositions of pentafluoroethane and trifluoroiodomethane
    Patent number: 8598107
    Abstract: Provided are azeotrope-like compositions comprising heptafluoropropane and trifluoroiodomethane and uses thereof, including use in refrigerant compositions, refrigeration systems, blowing agents, fire suppressant compositions, and aerosol propellants.
    Type: Grant
    Filed: January 13, 2009
    Date of Patent: December 3, 2013
    Assignee: Honeywell International Inc.
    Inventors: Rajiv Ratna Singh, Hang T. Pham, Robert Gerard Richard
  • Azeotropes of methyl chloride with fluorocarbons
    Patent number: 8592538
    Abstract: Azeotropic or azeotrope-like compositions of the present technology include methyl chloride and at least one hydrofluorocarbon or hydrofluoro-olefin. In some examples, the at least one hydrofluorocarbon or hydrofluoro-olefin can be selected from the group consisting of 1,1,1,2-tetrafluoroethane and 1,3,3,3-tetrafluoropropene. The azeotropic or azeotrope-like compositions can be used as solvents or diluents in polymerization processes, including slurry polymerization processes.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: November 26, 2013
    Assignee: Honeywell International Inc.
    Inventors: Raymond Hilton Thomas, Hang T. Pham, Rajiv Ratna Singh, Natalie Merrill
  • Polymer processing simplification
    Patent number: 8552128
    Abstract: A process for the preparation of a fluoroolefin polymer from an azeotropic mixture of monomers having a constant composition, the process including the step of: contacting in a reaction zone: (i) an initiator; and (ii) an azeotropic mixture of monomers including at least one fluoroolefin and, optionally, at least one ethylenically unsaturated comonomer capable of copolymerizing therewith; wherein the contacting is carried out at a temperature, pressure and length of time sufficient to produce the fluoroolefin polymer.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: October 8, 2013
    Assignee: Honeywell International Inc.
    Inventors: George J Samuels, Gregory J Shafer, Hang T Pham
  • Azeotrope-like composition of 2-chloro-3,3,3-trifluoropropene (HCFC-1233xf) and hydrogen fluoride (HF)
    Patent number: 8546624
    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: Grant
    Filed: March 3, 2009
    Date of Patent: October 1, 2013
    Assignee: Honeywell International Inc.
    Inventors: Hang T. Pham, Daniel C. Merkel, Konstantin A. Pokrovski, HsuehSung Tung, Rajiv R. Singh
  • Azeotrope-like compositions of (Z)-1-chloro-3,3,3-trifluoropropene and hydrogen fluoride
    Patent number: 8541634
    Abstract: Disclosed are azeotropic and azeotrope-like mixtures of (Z)-1-chloro-3,3,3-trifluoropropene (1233zd(Z)) and hydrogen fluoride. Such compositions are useful as an intermediate in the production of 1233zd(Z). The latter compound is useful as a nontoxic, zero ozone depleting fluorocarbon useful as a solvent, blowing agent, refrigerant, cleaning agent, aerosol propellant, heat transfer medium, dielectric, fire extinguishing composition and power cycle working fluid.
    Type: Grant
    Filed: January 14, 2013
    Date of Patent: September 24, 2013
    Assignee: Honeywell International Inc.
    Inventors: Ryan Hulse, Hang T Pham
  • AZEOTROPE-LIKE COMPOSITIONS COMPRISING 1-CHLORO-3,3,3-TRIFLUOROPROPENE
    Publication number: 20130231399
    Abstract: An azeotrope-like mixture consisting essentially of chlorotrifluoropropene and at least one component selected from the group consisting of a C1-C3 alcohol, a C5-C6 hydrocarbon, a halogenated hydrocarbon, methylal, methyl acetone, water, nitromethane, and combinations thereof.
    Type: Application
    Filed: November 17, 2011
    Publication date: September 5, 2013
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: RAJAT BASU, LESLIE BEMENT, KANE COOK, RYAN HULSE, GARY KNOPECK, HANG T. PHAM, RAJIV R. SINGH, DAVID J. WILLIAMS
  • AZEOTROPIC COMPOSITIONS OF 1,1,1,3,3-PENTACHLOROPROPANE AND HYDROGEN FLUORIDE
    Publication number: 20130221272
    Abstract: Provided are azeotropic or azeotrope-like mixtures of 1,1,1,3,3-pentachloro-propane (240fa) and hydrogen fluoride. Such compositions are useful as an intermediate in the production of HFC-245fa and HCFO-1233zd.
    Type: Application
    Filed: February 23, 2012
    Publication date: August 29, 2013
    Inventors: Daniel C. Merkel, Hsueh Sung Tung, Konstantin A. Pokrovski, Hang T. Pham, Ryan Hulse