Patents by Inventor Luther Elling Johnson

Luther Elling Johnson 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).

  • Duty cycle loading for orthopedic simulator
    Publication number: 20070169567
    Abstract: An orthopedic simulator is provided with a mechanism configured to apply motions and forces to a test specimen, such as a spinal implant, and a controller configured to control the mechanism to selectively apply the motions and forces in accordance with sinusoidal and non-sinusoidal curves.
    Type: Application
    Filed: January 5, 2007
    Publication date: July 26, 2007
    Inventors: Bradley D. Schulz, Luther Elling Johnson