Patents by Inventor David Benfield

David Benfield 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: 9261423
    Abstract: A three-axis load sensor utilizing four piezoresistive devices on a flexible silicon membrane is provided. The load sensor further includes a mesa disposed on the membrane substantially equidistant from the piezoresistive devices. A six-axis load cell is provided by placing a plurality of load sensors disposed on a substrate, the substrate configured to attach to an object wherein forces applied to the object can be measured and/or determined. The load sensors can be manufactured using bulk microfabrication techniques on a single crystal silicon wafer, and can detect normal and shear loading applied to the membrane.
    Type: Grant
    Filed: February 7, 2012
    Date of Patent: February 16, 2016
    Assignee: The Governors of the University of Alberta
    Inventors: David Benfield, Walied Ahmed Mohamed Moussa
  • Publication number: 20130239700
    Abstract: A three-axis load sensor utilizing four piezoresistive devices on a flexible silicon membrane is provided. The load sensor further includes a mesa disposed on the membrane substantially equidistant from the piezoresistive devices. A six-axis load cell is provided by placing a plurality of load sensors disposed on a substrate, the substrate configured to attach to an object wherein forces applied to the object can be measured and/or determined. The load sensors can be manufactured using bulk microfabrication techniques on a single crystal silicon wafer, and can detect normal and shear loading applied to the membrane.
    Type: Application
    Filed: February 7, 2012
    Publication date: September 19, 2013
    Applicant: The Governors of the University of Alberta
    Inventors: David Benfield, Walied Ahmed Mohamed Moussa
  • Publication number: 20070013222
    Abstract: The invention relates to a lounger, a wading or floating in pool, a floating devise, a small personal boat, with many ways to use. Made from a plastic body, enclosed watertight and floatable and provides many ways to relax in or out of a pool or any body of water.
    Type: Application
    Filed: February 3, 2003
    Publication date: January 18, 2007
    Inventor: David Benfield
  • Publication number: 20050208483
    Abstract: The invention includes kits for producing and using immunogenic compositions that include swine infertility and respiratory virus. The invention also includes vaccines and sera for treatment of Mystery Swine Disease (MSD), a method for producing the vaccine, methods for diagnosis of MSD, a viral agent that will mimic “mystery swine disease” and antibodies to the viral agent useful in diagnosis and treatment of MSD. The serum contains mammalian antibodies which are effective in treating MSD.
    Type: Application
    Filed: May 12, 2005
    Publication date: September 22, 2005
    Inventors: James Collins, David Benfield, Danny Chladek, Louis Harris, David Gorcyca