Patents Examined by Raben Sergent
  • Coated substrates comprising polymers derived from monocarbamate diols
    Patent number: 5212015
    Abstract: This invention provides synthetic routes for novel single isomers of monocarbamate diols and their polymerization to provide novel polyesters, polyurethanes, polycarbonates, and the like having pendant carbamate groups on the polymer chain. Devices using some of these novel polymers which demonstrate nonlinear optical activity are also disclosed.
    Type: Grant
    Filed: June 26, 1992
    Date of Patent: May 18, 1993
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Smarajit Mitra, Cecil V. Francis