Patents by Inventor Sivagnanasundram Surendrakumar

Sivagnanasundram Surendrakumar 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).

  • Transparent conducting polymers
    Patent number: 6153726
    Abstract: There is disclosed poly (9-aminoanthracene) (P9-AA) free or substantially free of anthraquinone, methods of making such material and P9-AA in various oxidation states. Certain substituted 9 aminoanthracenes and polymers thereof are also disclosed as are polymers of 9 aminoanthracene with aniline.
    Type: Grant
    Filed: December 1, 1998
    Date of Patent: November 28, 2000
    Assignee: Nissan Chemical Industries Ltd.
    Inventors: Poopathy Kathirgamanathan, Sivagnanasundram Surendrakumar