Patents by Inventor Norris D. Zetmeir

Norris D. Zetmeir 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).

  • Controlling permeability in subterranean formations
    Patent number: 3964923
    Abstract: The production of water in subterranean oil and gas formations is inhibited by the injection of a nonaqueous composition containing at least one crosslinkable polymeric material and a two-component catalyst system effective to cause in situ crosslinking of the polymeric material when contacted with water.
    Type: Grant
    Filed: January 13, 1975
    Date of Patent: June 22, 1976
    Assignee: Phillips Petroleum Company
    Inventor: Norris D. Zetmeir