Patents by Inventor Carroll J. Wedel

Carroll J. Wedel 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).

  • Extrusion stabilization of polypyrrolidone by hydroquinones
    Patent number: 4102861
    Abstract: Hydroquinone and alkylhydroquinone are thermal stabilization additives for normally solid polypyrrolidone at melt temperatures.
    Type: Grant
    Filed: November 29, 1976
    Date of Patent: July 25, 1978
    Assignee: Chevron Research Company
    Inventors: Carroll J. Wedel, Phillip H. Parker
  • Polyolefin photostabilizer composition
    Patent number: 4101479
    Abstract: Polyolefins are stabilized against photodegradation by the inclusion of 0.1-5 weight percent of a synergistic photostabilizer composition consisting of a thiodiester and the nickel salt of a monocarboxylic acid.
    Type: Grant
    Filed: March 14, 1977
    Date of Patent: July 18, 1978
    Assignee: Chevron Research Company
    Inventor: Carroll J. Wedel
  • Thermal stabilization of polypyrrolidone against reversion to monomer
    Patent number: 4077940
    Abstract: Certain aryl esters of bis-arylphosphonous acid are thermal stabilization additives for solid polypyrrolidone at the melt temperature.
    Type: Grant
    Filed: September 14, 1976
    Date of Patent: March 7, 1978
    Assignee: Chevron Research Company
    Inventor: Carroll J. Wedel
  • Ultraviolet protectorant composition
    Patent number: 3987001
    Abstract: An ultraviolet protectorant composition is provided for surface application by aerosol to polyolefins. The composition consists of an ultraviolet protectorant, a binder and solvent.
    Type: Grant
    Filed: February 3, 1975
    Date of Patent: October 19, 1976
    Assignee: Chevron Research Company
    Inventors: Carroll J. Wedel, Frank L. Steckhahn, John David Gardner