Patents by Inventor Charles R. Bergen

Charles R. Bergen 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).

  • Method and apparatus for repairing vessels
    Patent number: 5149105
    Abstract: This invention relates to a method and an apparatus for sealing a port of a vessel, which apparatus comprises: (a) a seal for forming a gas-tight seal with the port to close off the port, (b) a chamber; and (c) a chamber sweeping gas for sweeping the chamber.
    Type: Grant
    Filed: February 11, 1991
    Date of Patent: September 22, 1992
    Assignee: Ethyl Corporation
    Inventors: Phillip R. Beaver, Thomas E. Henke, Charles R. Bergen, Cecil P. Loechelt, II