Patents by Inventor Richard E. Hammond

Richard E. Hammond 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).

  • Curb box
    Patent number: 4308886
    Abstract: A curb box for underground gas and water services formed of a synthetic plastic material wherein the lower portion of the curb box is formed with a bell housing for receiving a service or distribution line valve. The bell housing includes valve engaging surfaces frictionally contacting the valve wherein such frictional engagement initially positions the valve upon the curb box and resists inadvertent displacement between the valve and curb box during installation, back filling and settling.
    Type: Grant
    Filed: November 27, 1979
    Date of Patent: January 5, 1982
    Assignee: Handley Industries, Inc.
    Inventors: Edward W. Handley, Richard E. Hammond, Robert E. Diffenderfer
  • High efficiency catalysts for olefin polymerization
    Patent number: 4136058
    Abstract: Olefin polymerization catalysts prepared by reducing transition metal compounds with an organometallic compound are rendered highly efficient by reacting excess organometallic compound with a deactivation agent, such as hydrogen chloride, prior to activation of the catalyst with organoaluminum compounds. Catalyst efficiencies of as high as 700,000 grams of polyethylene per gram of transition metal in the catalyst have been attained at reactor pressures of only 50 psig.
    Type: Grant
    Filed: February 28, 1977
    Date of Patent: January 23, 1979
    Assignee: Arco Polymers, Inc.
    Inventors: James J. Harris, Richard E. Hammond
  • High efficiency catalysts for olefin polymerization
    Patent number: 4135046
    Abstract: A unique high efficiency catalyst has been developed for the polymerization of ethylene. The activity of the catalyst, which uses a mixed magnesium-aluminum alkyl as a reducing agent for tetrabutyltitanate, and hydrogen chloride to deactivate excess reducing agent, is dependent on a specific and unpredicted order of addition of catalyst components.
    Type: Grant
    Filed: February 28, 1977
    Date of Patent: January 16, 1979
    Assignee: Arco Polymers, Inc.
    Inventors: James J. Harris, Richard E. Hammond