Patents by Inventor Russell Bruce Hatch

Russell Bruce Hatch 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).

  • Sleeve for a liquid transfer roll and method for producing it
    Patent number: 5840386
    Abstract: A sleeve adapted to be mounted on a mandrel to form a liquid transfer roll or the like comprises a radially expandable inner skin defining a radially inner surface of the sleeve, at least one radially compressible intermediate layer of resilient plastic material; and a rigid, self-supporting metal outer tube. Further methods for producing such a sleeve are described.
    Type: Grant
    Filed: February 22, 1996
    Date of Patent: November 24, 1998
    Assignee: Praxair S.T. Technology, Inc.
    Inventors: Russell Bruce Hatch, Jacques Luthi
  • Duplex coating for corona electrodes
    Patent number: 5648168
    Abstract: A corona electrode, such as a roller electrode, having an outer dielectric layer and an undercoat of a copper layer that permits the electrode to operate at a lower temperature for a specific power input over a similar electrode without the copper undercoat.
    Type: Grant
    Filed: January 18, 1996
    Date of Patent: July 15, 1997
    Assignee: Praxair S.T. Technology, Inc.
    Inventors: Russell Bruce Hatch, Keith Edward Bowen