Patents by Inventor John C. Worboys

John C. Worboys 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).

  • Process of separating asbestos fibers and product thereof
    Patent number: 4226672
    Abstract: A process of separating fibres from asbestos-bearing material which process comprises the steps by treating said asbestos-bearing material with a chemical agent capable of reacting with, or adsorbing on, asbestos fibres to form a dispersion, and agglomerating said dispersion. The process gives high yields of novel fibres characterized in that the said fibres provide reinforcement in cementitious compositions.
    Type: Grant
    Filed: June 27, 1978
    Date of Patent: October 7, 1980
    Assignee: ICI Australia Limited
    Inventors: Victor J. Absolon, George T. Hurst, John C. Worboys, George H. Barnett, Ross P. Dickson
  • Cementitious composition containing asbestos fibres and prepared using a surfactant
    Patent number: 4190456
    Abstract: Cementitious compositions containing novel asbestos fibres characterized in that the said asbestos fibres are prepared from asbestos-bearing material by a process comprising treating said asbestos-bearing material with a surfactant to form a dispersion and agglomerating said dispersion.
    Type: Grant
    Filed: June 27, 1978
    Date of Patent: February 26, 1980
    Assignee: ICI Australia Limited
    Inventors: Victor J. Absolon, George T. Hurst, John C. Worboys, George H. Barnett, Ross P. Dickson