Patents by Inventor Peter James Craig

Peter James Craig 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).

  • Microsuspension polymerization process to yield vinyl halide polymer latex involving delayed addition of bulk monomer mix
    Patent number: 3980603
    Abstract: In a microsuspension polymerization of vinyl halide monomer additional monomer is added during the polymerization.
    Type: Grant
    Filed: December 20, 1974
    Date of Patent: September 14, 1976
    Assignee: BP Chemicals International Limited
    Inventors: Basil John Bradley, Peter James Craig, Geoffrey James Gammon
  • Polymerisation process
    Patent number: 3954698
    Abstract: Vinyl halide is homopolymerized under suspension conditions with additional vinyl halide being added after the pressure drop with polymer being recovered only after the polymerisation is completed.
    Type: Grant
    Filed: December 20, 1974
    Date of Patent: May 4, 1976
    Assignee: BP Chemicals International Limited
    Inventors: Basil John Bradley, Peter James Craig, Geoffrey James Gammon