Patents by Inventor John A. Sturos

John A. Sturos 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).

  • Optical wood-bark segregator
    Patent number: 4266675
    Abstract: A process of separating wood chips according to their bark content by orienting them between a light source and light detector, measuring the amount of light transmitted through each chip, and separating the bark-laden chips from the bark-free chips on the basis of their light transmittance. An apparatus for separating wood chips according to their bark content, comprising a light source, a light detector, means for properly orienting the wood chips between the light source and detector, and means for differentiating between bark-laden chips and bark-free chips on the basis of their light transmittance.
    Type: Grant
    Filed: January 4, 1980
    Date of Patent: May 12, 1981
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Robert D. Barwise, John A. Sturos, Douglas B. Brumm