Patents by Inventor Brian A. Cooke

Brian A. Cooke 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).

  • Phosphating process
    Patent number: 4147567
    Abstract: Water-soluble lignosulphonate salts when present in an acid metal phosphating solution modify the physical form of sludge produced therein when the solution is used to treat a metal substrate. Process efficiency is improved.
    Type: Grant
    Filed: November 21, 1977
    Date of Patent: April 3, 1979
    Assignee: Imperial Chemical Industries Limited
    Inventors: Michael Brock, Brian A. Cooke