Patents by Inventor Douglas A. Groh

Douglas A. Groh 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).

  • Patent number: 7515095
    Abstract: An antenna for a level sensing gauge comprises an environmentally sealed chamber extending from the level sensing gauge and mounting and positionable within the interior of a storage compartment, including a breathable aperture for permitting pressure and humidity equalization between the interior of said chamber and an exterior environment.
    Type: Grant
    Filed: September 29, 2006
    Date of Patent: April 7, 2009
    Assignee: Ohmart/VEGA Corporation
    Inventors: Neil T. Wilkie, Douglas A. Groh, Christopher P. Lewis, William C. Gable
  • Publication number: 20090032304
    Abstract: A non-contact measuring system using emitted and received electromagnetic radiation or microwaves is mounted on the return line carrying oil drilling mud and cuttings from an oil drilling apparatus. The system measures the height and flow of the mud and cuttings in the pipe. In one embodiment, it is mounted to the pipe in a low profile manner to protect it, and it uses a reflective surface to reflect the signal to the flow being measured.
    Type: Application
    Filed: August 3, 2007
    Publication date: February 5, 2009
    Applicant: OHMART/VEGA CORPORATION
    Inventor: Douglas A. Groh
  • Publication number: 20080079628
    Abstract: An antenna for a level sensing gauge comprises an environmentally sealed chamber extending from the level sensing gauge and mounting and positionable within the interior of a storage compartment, including a breathable aperture for permitting pressure and humidity equalization between the interior of said chamber and an exterior environment.
    Type: Application
    Filed: September 29, 2006
    Publication date: April 3, 2008
    Applicant: OHMART/VEGA CORPORATION
    Inventors: Neil T. Wilkie, Douglas A. Groh, Christopher P. Lewis, William C. Gable