Patents by Inventor Gordon R. Helmer

Gordon R. Helmer 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).

  • Continuous plasma surface treatment method for elongated, flexible, clear polymeric tubing
    Patent number: 5277753
    Abstract: A plasma treatment apparatus for treating elongated clear polymeric tubing, by moving the tubing through a plasma generation chamber and maintaining tension on the tubing below that at which clarity of the tubing is reduced.
    Type: Grant
    Filed: December 4, 1992
    Date of Patent: January 11, 1994
    Assignee: Medtronic, Inc.
    Inventors: James Kelley, Paul Rudolph, Gordon R. Helmer, Daniel E. Haeg, Roger C. Erickson
  • Continuous plasma surface treatment apparatus for running length polymeric tubing
    Patent number: 5198033
    Abstract: A plasma treatment apparatus for treating strip-stock material, such as tubing, wire, webs, and the like, by moving the strip-stock through a plasma treatment region of the apparatus provides improved consistency of surface treatment if the tension on the material is maintained within a predetermined range.
    Type: Grant
    Filed: October 31, 1991
    Date of Patent: March 30, 1993
    Assignee: Medtronic, Inc.
    Inventors: James Kelley, Paul Rudolph, Gordon R. Helmer, Daniel C. Haeg, Roger C. Erickson