Patents by Inventor Howard D. Johnson

Howard D. Johnson 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).

  • Removing deposits from surfaces in wood pulp processing apparatus
    Patent number: 4196094
    Abstract: Methods for removing deposits from surfaces in wood pulp processing apparatus are provided wherein the deposits are contacted with compositions comprised of aqueous solutions of alkali metal hypochlorites.
    Type: Grant
    Filed: December 22, 1978
    Date of Patent: April 1, 1980
    Assignee: Halliburton Company
    Inventors: Howard D. Johnson, Kenneth J. Snyder