Patents by Inventor Donald L. Sturtevant

Donald L. Sturtevant 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).

  • Publication number: 20020095063
    Abstract: A positive fixation device for use with a structure of mastoid, middle, or inner ear having engaging elements for engaging the ear structure and one or more resilient portions for adjusting the pressure of the engaging elements on the ear structure. The device is particularly useful in connecting the ear structure with a desired component, for example, a transducer.
    Type: Application
    Filed: January 12, 2001
    Publication date: July 18, 2002
    Inventors: Kai Kroll, Theodore P. Adams, Donald L. Sturtevant, Clair Madsen
  • Patent number: 5447685
    Abstract: An industrial waste disposal apparatus which converts the waste from hazardous to nonhazardous form. The apparatus processes the waste into a solid block of nonhazardous material. The solid block may thereafter be disposed of through conventional disposal methods. This apparatus and process also reduces the volume up to 80% of the original volume.
    Type: Grant
    Filed: September 3, 1993
    Date of Patent: September 5, 1995
    Assignee: Medivators, Inc.
    Inventors: Michael K. Sievert, Curtis D. Luebke, Donald L. Sturtevant