Patents by Inventor Robert Allan Winstel

Robert Allan Winstel 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).

  • Reactive liquid polyamides from amine residues
    Patent number: 4032549
    Abstract: This invention relates to reactive liquid polyamides derived from poly-basic acids and amine residues obtained as by-products from the process for the hydrogenation of adiponitrile to hexamethylenediamine. By use of these amine residues it is possible to obtain liquid polyamide products having low amine values and manageable viscosities. The liquid reactive polyamides are useful for a variety of applications, for example, they can be blended with thermoplastic polyamide resins to impart desirable properties thereto.
    Type: Grant
    Filed: March 29, 1976
    Date of Patent: June 28, 1977
    Assignee: Emery Industries, Inc.
    Inventors: Hubert J. Sharkey, Robert Allan Winstel