Patents by Inventor John L. Margrave

John L. Margrave 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).

  • Mold lubricant and method
    Patent number: 4165974
    Abstract: A lubricant for improved performance in glass molding. The lubricant is smokeless, odorless, non-toxic and non-combustible. It is applied infrequently, such as once a shift or less. The lubricant is carbon monofluoride (CF.sub.x).sub.n wherein "x" is about 0.7 or, preferably, above 1.00. Novel methods of application of the lubricant are disclosed.
    Type: Grant
    Filed: March 16, 1973
    Date of Patent: August 28, 1979
    Inventors: George I. Goodwin, John L. Margrave, Robert E. Wagner