Patents by Inventor Richard Harvey Williams

Richard Harvey Williams 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).

  • 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