Patents by Inventor Hiroshi J. Goldsmid

Hiroshi J. Goldsmid 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).

  • Hardness tester
    Patent number: 4445367
    Abstract: A thermal contact resistance having a thermocouple whereby the contact resistance between a probe of the thermocouple and a test material is less dependant on the thermal conductivity of the test material and more dependent on its hardness.
    Type: Grant
    Filed: November 23, 1981
    Date of Patent: May 1, 1984
    Assignee: Unisearch Limited
    Inventor: Hiroshi J. Goldsmid
  • Method and means for distinguishing gemstones
    Patent number: 4324129
    Abstract: A method of identifying a material, such as a gemstone by applying a thermocouple to a stone, the thermocouple comprising two dissimilar metals having junctions spaced close to each other, heating one of said junctions, applying the other junction to the stone via a high thermal conducting tip and, recording the thermoelectric e.m.f. developed between the junctions which recorded value provides a determination of the type of material.
    Type: Grant
    Filed: March 18, 1980
    Date of Patent: April 13, 1982
    Assignee: Unisearch Limited
    Inventor: Hiroshi J. Goldsmid