Patents by Inventor Anthony John Park

Anthony John Park 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).

  • Removal of residual monomer in the presence of water by dielectric heating
    Patent number: 4020267
    Abstract: Residual vinyl halide is removed from vinyl halide polymer by radiofrequency dielectric heating while maintaining the presence of water in the polymer by impeding evaporation of water from the polymer.
    Type: Grant
    Filed: December 11, 1975
    Date of Patent: April 26, 1977
    Assignee: The British Petroleum Company Limited
    Inventor: Anthony John Park
  • Treatment of vinyl halide polymers
    Patent number: 4015065
    Abstract: Vinyl halide monomer content of vinyl halide polymer is reduced by subjecting the polymer to radio frequency dielectric heating in the presence of added polymerization initiator.
    Type: Grant
    Filed: May 5, 1975
    Date of Patent: March 29, 1977
    Assignee: The British Petroleum Company Limited
    Inventors: Anthony John Park, Alan Charles Sturt
  • Removal of residual vinyl halide monomer from vinyl halide polymers by radio frequency dielectric heating
    Patent number: 4008361
    Abstract: The residual vinyl halide content of vinyl halide polymer is reduced by radiofrequency dielectric heating of a water-containing layer of particulate polymer over which is disposed a layer of material through which vinyl chloride can pass but which restricts the passage of water e.g. perforated plastic sheet.
    Type: Grant
    Filed: December 11, 1975
    Date of Patent: February 15, 1977
    Assignee: The British Petroleum Company Limited
    Inventors: Anthony John Park, Brian Weeks
  • Production of polymers
    Patent number: 3950318
    Abstract: A vinyl halide paste polymer of low viscosity may be produced by adding an alkaryl sulphonate emulsifier to the polymer latex after polymerisation but before isolation. This gives a polymer which can be made into a paste in known fashion.
    Type: Grant
    Filed: March 21, 1975
    Date of Patent: April 13, 1976
    Assignee: BP Chemicals International Limited
    Inventors: Anthony John Park, Alan Charles Sturt, Richard Harvey Williams