Patents by Inventor Jasper L. Mullen

Jasper L. Mullen 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: 4699000
    Abstract: A device and method are described for measuring and evaluating mechanical properties such as microhardness of a material. The present invention conveniently incorporates commercially available hardness testing equipment but modifies it to permit continuous evaluation and measurement of the displacement of the stylus used to indent the sample being tested. By simultaneously monitoring displacement, load applied to the stylus and time values relating to the mechanical properties of the material such as wear, fatigue and tensile strength are obtained.
    Type: Grant
    Filed: April 17, 1986
    Date of Patent: October 13, 1987
    Assignee: Micro Properties Inc.
    Inventors: David S. Lashmore, Jasper L. Mullen, Christian E. Johnson, Robert S. Polvani