Patents by Inventor Herbert J. Huthwaite

Herbert J. Huthwaite 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).

  • Process to form film from blends of polycaprolactam and poly(hexamethylene adipamide)
    Patent number: 4556696
    Abstract: The present invention is a process to form a composition comprising from 5 to 50% by weight and preferably from 10 to 30% by weight polycaprolactam and from 50 to 95% by weight and preferably 70 to 90% by weight poly(hexamethylene adipamide). The process comprises heating the composition to from 440.degree. to 505.degree. F. and preferably 450.degree. to 485.degree. F. The preferred forming process is to form the composition into a film.
    Type: Grant
    Filed: April 26, 1984
    Date of Patent: December 3, 1985
    Assignee: Allied Corporation
    Inventors: Donald F. Stewart, Michael F. Tubridy, Herbert J. Huthwaite