Patents by Inventor David Roy Kidder

David Roy Kidder 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).

  • Polyamidation process by maintaining temperature and pressure differential controls
    Patent number: 3985714
    Abstract: A process is disclosed for controlling the dyeability of continuous polyamide filaments during their preparation by observing the pressure differential in the transfer line between the finisher and the spinnerets and adjusting the temperature in the evaporator apparatus to compensate for any fluctuation in pressure drop.
    Type: Grant
    Filed: September 23, 1974
    Date of Patent: October 12, 1976
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: David Roy Kidder