Patents by Inventor Hin-Mo Li

Hin-Mo Li 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 for producing high modulus film
    Patent number: 4867937
    Abstract: The invention provides a two-step process for increasing the modulus of a film in a desired direction, by drawing the film at between about 10.degree. C. above T.sub.g and 40.degree. C. below T.sub.m at a draw ratio of between 1.05 and 5.5 and then drawing the film in the same direction at between about 5.degree. C. and 35.degree. C. below T.sub.m at a draw ratio of between about 1.05 and 2.5.
    Type: Grant
    Filed: February 17, 1987
    Date of Patent: September 19, 1989
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Hin-Mo Li, Fred J. Roska