Patents by Inventor Johannes T. Evers

Johannes T. Evers 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).

  • Crystalline unsaturated polyester and the preparation thereof
    Patent number: 4839438
    Abstract: The invention relates to crystalline unsaturated polyester, consisting of segments derived from a mainly hydroxy-terminated, unsaturated polyester, bound through urethane bonds to units derived from a (poly)isocyanate and further, if desired, in an amount that is at most relatively small, units, bound via urethane bonds, that are derived from a diol containing between 2 and 12 carbon atoms and/or from a diamine containing between 2 and 12 carbon atoms and/or from an alkanolamine containing between 2 and 12 carbon atoms.
    Type: Grant
    Filed: July 24, 1987
    Date of Patent: June 13, 1989
    Assignee: DSM Resins B.V.
    Inventors: Johannes T. Evers, Robertus G. Berenbak