Patents by Inventor Edward T. Ketcham

Edward T. Ketcham 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).

  • Multi-stage gas compressor system
    Patent number: 6695591
    Abstract: A multi-stage compressor comprises a gas compressor, a centrifugal blower having an input connected with a gas source and an output connected with the gas compressor and providing a flow of compressed gas as a first stage of compression to the gas compressor, and a power source mechanically connected with and driving both the centrifugal blower and gas compressor to provide multi-stage compression of said gas.
    Type: Grant
    Filed: May 20, 2002
    Date of Patent: February 24, 2004
    Assignee: Grimmer Industries, Inc.
    Inventors: John E. Grimmer, Edward T. Ketcham
  • Multi-stage gas compressor system
    Publication number: 20030215339
    Abstract: A multi-stage compressor comprises a gas compressor, a centrifugal blower having an input connected with a gas source and an output connected with the gas compressor and providing a flow of compressed gas as a first stage of compression to the gas compressor, and a power source mechanically connected with and driving both the centrifugal blower and gas compressor to provide multi-stage compression of said gas.
    Type: Application
    Filed: May 20, 2002
    Publication date: November 20, 2003
    Inventors: John E. Grimmer, Edward T. Ketcham