Patents by Inventor Andre D. Chissel

Andre D. Chissel 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).

  • Polymerizable thiophene monomers
    Patent number: 4992559
    Abstract: Thiophene derivatives of the formula ##STR1## wherein R.sup.1 and R.sup.2 are certain specified substituent groups can be homopolymerized or copolymerized to form polymers which are electroconductive. These polymers find many uses, for example, as EMI/RF shielding materials, in electrochromic display systems, as antistatics, as ion and pH sensors, as battery electrode materials etc.
    Type: Grant
    Filed: July 16, 1987
    Date of Patent: February 12, 1991
    Assignee: Cookson Group plc
    Inventors: Poopathy Kathirgamanathan, Martin R. Bryce, David Parker, Nigel R. M. Smith, Andre D. Chissel