Patents Examined by Edward J. Smith, Jr.
  • Cyclopentadienylene vinylene polymers
    Patent number: 4816521
    Abstract: Polycyclopentadienylene vinylene exhibiting solvent resistance, e.g. to chlorinated solvents such as chloroform and methylene chloride and to amine solvents such as dimethylformamide, is prepared by removal of acid groups from precursor polymer having norbornene dioxo derivatives.
    Type: Grant
    Filed: May 27, 1987
    Date of Patent: March 28, 1989
    Assignee: Monsanto Company
    Inventor: Jawed Asrar