Patents by Inventor Ross Kenneth Leighton

Ross Kenneth Leighton 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).

  • Washer for use with a bone screw
    Patent number: 5797912
    Abstract: A washer for use with a bone screw has a head of a first diameter. The washer has a generally hemispherical recess dimensioned to fit the head of such bone screw, and an exterior shape closely approximating the shape of a head of a bone screw and having a second diameter that is larger than the first diameter.
    Type: Grant
    Filed: August 19, 1997
    Date of Patent: August 25, 1998
    Assignee: Terray Corporation
    Inventors: John Runciman, Samuel G. Agnew, Ross Kenneth Leighton