Patents by Inventor Craig R. Gochanour

Craig R. Gochanour 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).

  • Gas separation membrane with ultrathin layer
    Patent number: 5160353
    Abstract: This invention is a gas separation membrane containing two polymer layers, a relatively thick layer, and an ultrathin layer, 10 to about 200 A thick. The ultrathin layer polymer is more selective than the polymer used in the thick layer. Also provided is a process for making such membranes.
    Type: Grant
    Filed: August 30, 1990
    Date of Patent: November 3, 1992
    Assignee: E. I. Du Pont de Nemours & Company
    Inventor: Craig R. Gochanour