Patents by Inventor Tjeerd Eernstman

Tjeerd Eernstman 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).

  • Adhesive polyamide resin compositions containing high acid number copolymers
    Patent number: 4132690
    Abstract: Adhesive polyamide resin compositions, such as hot melts, containing conventional components are improved by inclusion of a normally solid, homogeneous copolymer of ethylene and an unsaturated carboxylic acid having an acid number of at least about 100 and a number average molecular weight between 500 and 5,000.
    Type: Grant
    Filed: September 27, 1976
    Date of Patent: January 2, 1979
    Assignee: Allied Chemical Corporation
    Inventors: Tjeerd Eernstman, Christopher J. Auger, Emile M. Devroede