Patents by Inventor Phuong Tang

Phuong Tang 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).

  • Cutting and lubricating composition for use with a wire cutting apparatus
    Patent number: 6054422
    Abstract: A lubricating composition which may contain up to 70 weight percent abrasive grit material for use with wire saw and slicing apparatus for cutting or slicing hard and brittle materials. The composition contains abrasive particles suspended in a mixture of high and low molecular weight polyalkylene glycols and a suspension agent. The viscosity of the composition is about 50 to 700 cps.
    Type: Grant
    Filed: February 19, 1999
    Date of Patent: April 25, 2000
    Assignee: PPT Research, Inc.
    Inventors: Irl E. Ward, Phuong Tang