Patents by Inventor Tu-Anh Pham

Tu-Anh 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).

  • Static dissipative interpolymers
    Patent number: 5122558
    Abstract: This invention is a polymer containing a plurality of ketone groups in the polymer backbone and containing an amount of a non-volatile, ionizable metal salt sufficient to render it static dissipative. The polymer is substantially devoid of a fatty acid salt, a C.sub.6 -C.sub.30 carboxylic acid ester and a phosphate ester compound. The static dissipative polymer can be used neat or blended with other polymers for use in applications requiring static dissipative behavior.
    Type: Grant
    Filed: November 19, 1990
    Date of Patent: June 16, 1992
    Assignee: The Dow Chemical Company
    Inventors: Thomas M. Knobel, Tu-Anh Pham, Donald M. Maschmeyer, Lance L. Black
  • Oxygen barrier resins
    Patent number: 4965314
    Abstract: Carbon monoxide-containing ethylene polymers are blended with vinyl alcohol polymers, including vinyl alcohol homopolymers and copolymers, to prepare oxygen barrier resins having good processability.
    Type: Grant
    Filed: January 29, 1990
    Date of Patent: October 23, 1990
    Assignee: The Dow Chemical Company
    Inventors: Gerald M. Lancaster, Tu-Anh Pham, James A. Allen
  • Oxygen barrier resins
    Patent number: 4910253
    Abstract: Carbon monoxide-containing ethylene polymers are blended with vinyl alcohol polymers, including vinyl alcohol homopolymers and copolymers, to prepare oxygen barrier resins having good processability.
    Type: Grant
    Filed: July 10, 1986
    Date of Patent: March 20, 1990
    Assignee: The Dow Chemical Company
    Inventors: Gerald M. Lancaster, Tu-Anh Pham, James A. Allen
  • Foamable thermoplastic polymers and a method for foaming
    Patent number: 4902721
    Abstract: Foamed products are prepared by subjecting a crosslinked polymer such as an ethylene-carbon monoxide copolymer susceptible to heating by high frequency electromagnetic radiation such as microwave or radio frequency which has been imbibed or impregnated with a suitable mechanical or physical blowing agent such as a halogenated hydrocarbon to sufficient high frequency electromagnetic radiation to cause foaming of the polymer.
    Type: Grant
    Filed: July 19, 1989
    Date of Patent: February 20, 1990
    Assignee: The Dow Chemical Company
    Inventors: Tu-Anh Pham, Gerald M. Lancaster
  • Foamable thermoplastic polymers and a method for foaming
    Patent number: 4885315
    Abstract: Foamed products are prepared by subjecting a crosslinked polymer such as an ethylene-carbon monoxide copolymer susceptible to heating by high frequency electromagnetic radiation such as microwave or radio frequency which has been imbibed or impregnated with a suitable mechanical or physical blowing agent such as a halogenated hydrocarbon to sufficient high frequency electromagnetic radiation to cause foaming of the polymer.
    Type: Grant
    Filed: September 7, 1988
    Date of Patent: December 5, 1989
    Assignee: The Dow Chemical Company
    Inventors: Tu-Anh Pham, Gerald M. Lancaster
  • Foamable thermoplastic polymers and a method for foaming
    Patent number: 4853420
    Abstract: Foamed products are prepared by subjecting a crosslinked polymer such as an ethylene-carbon monoxide copolymer susceptible to heating by high frequency electromagnetic radiation such as microwave or radio frequency which has been imbibed or impregnated with a suitable mechanical or physical blowing agent such as a halogenated hydrocarbon to sufficient high frequency electromagnetic radiation to cause foaming of the polymer.
    Type: Grant
    Filed: May 4, 1987
    Date of Patent: August 1, 1989
    Assignee: The Dow Chemical Company
    Inventors: Tu-Anh Pham, Gerald M. Lancaster