Patents by Inventor Donald Earl Gessell

Donald Earl Gessell 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).

  • Hydrocarbon soluble catalyst containing dinitrogen or dihydrogen transition metal complex
    Patent number: 4091082
    Abstract: Hydrocarbon-soluble compositions useful as the transition metal component in the Ziegler polymerization of .alpha.-olefins are provided by reacting molecular nitrogen or hydrogen with a transition metal compound such as titanium trichloride to form a dinitrogen or dihydrogen complex of the transition metal compound.
    Type: Grant
    Filed: June 4, 1976
    Date of Patent: May 23, 1978
    Assignee: The Dow Chemical Company
    Inventors: Donald Earl Gessell, Kirby Lowery, Jr.
  • High efficiency complex catalyst for polymerizing olefins
    Patent number: 4067822
    Abstract: Compositions exhibiting high catalytic activity in the polymerization of .alpha.-olefins are provided by mixing a dinitrogen and/or dihydrogen complex of a transition metal such as titanium with a conventional Ziegler catalyst such as the reaction product of titanium tetrachloride and aluminum triethyl. Polymerization processes employing this catalyst composition do not require conventional catalyst removal steps in order to provide polymers having suitable color and other physical characteristics.
    Type: Grant
    Filed: June 23, 1976
    Date of Patent: January 10, 1978
    Assignee: The Dow Chemical Company
    Inventors: Donald Earl Gessell, Gaylon Le Roy Dighton, Luis Daniel Valenzuela-Bernal