Patents by Inventor Harold D. Coale, deceased

Harold D. Coale, deceased 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).

  • Casting of PPS film
    Patent number: 4102954
    Abstract: Films of poly(arylene sulfide) polymers are produced by applying a layer of an arylene sulfide polymer resin on a metal substrate, with a metal oxide release agent interposed between the substrate and the resin layer, curing the polymer thereon, cooling the polymer layer and removing the resulting film from the substrate.
    Type: Grant
    Filed: March 29, 1977
    Date of Patent: July 25, 1978
    Assignee: Phillips Petroleum Company
    Inventor: Harold D. Coale, deceased