Patents by Inventor Thomas V. Derrick, Jr.

Thomas V. Derrick, Jr. 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).

  • Highly oriented, partially drawn, untwisted, compact poly(.epsilon.-caproamide) yarn
    Patent number: 4237187
    Abstract: A process for producing a highly oriented, partially drawn, untwisted, compact poly(.epsilon.-caproamide) yarn at windup speeds of from 3500 to 6000 meters per minute is disclosed. The process features the steps of overfeeding the yarn, by from 0.5 to 2.0 percent, to entangling means, and overfeeding the shrinking yarn to the winder. The yarn is "drawn" in the quench stack. Draw-twisting is omitted by this process; yarn so produced performs as well as conventional, draw-twisted yarn in end use applications, e.g., knitting and weaving.
    Type: Grant
    Filed: February 26, 1979
    Date of Patent: December 2, 1980
    Assignee: Allied Chemical Corporation
    Inventors: James C. Raybon, Jr., Malcolm O. Darby, Thomas V. Derrick, Jr.