Patents by Inventor Narayanan Venkatasubramaian

Narayanan Venkatasubramaian 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).

  • Aromatic polyamides containing keto-benzocyclobutene pendants
    Patent number: 5514769
    Abstract: A crosslinkable polymer having repeating units of the formula: ##STR1## wherein Ar is selected from the group consisting of ##STR2## These polymers are useful in the preparation of molecular composites with rigid-rod polymers, including para-oriented benzobisazole polymers, such as benzobisthiazole, benzobisoxazole and benzobisimidazole polymers.
    Type: Grant
    Filed: June 19, 1995
    Date of Patent: May 7, 1996
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Loon-Seng Tan, Narayanan Venkatasubramaian