Patents by Inventor Henry A. McCandless

Henry A. McCandless 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 for the manufacture of maleic anhydride utilizing peroxides to improve catalytic activity
    Patent number: 4950769
    Abstract: A process for the manufacture of maleic anhydride using phosphorus-vanadium catalyst and peroxide modifiers.
    Type: Grant
    Filed: August 23, 1989
    Date of Patent: August 21, 1990
    Assignee: Amoco Corporation
    Inventors: Henry A. McCandless, John L. Cearley, Hassan Taheri
  • Process for preparation of Mannich reaction products from oxidized polymers
    Patent number: 4663392
    Abstract: A process for the preparation of oil-soluble Mannich condensation products wherein an amine is prereacted with a sulfonic acid or ammonium sulfonate, oleic acid, and an oxidized olefin polymer and the prereaction product is reacted with an aldehyde.
    Type: Grant
    Filed: May 16, 1986
    Date of Patent: May 5, 1987
    Assignee: Amoco Corporation
    Inventors: Yoon S. Song, Henry A. McCandless