Patents by Inventor Duane C. Ulmer

Duane C. Ulmer 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).

  • Preparation of dipeptides
    Patent number: 4935355
    Abstract: A process for forming a dipeptide which is substantially free of solid dipeptide-amino acid adduct by reacting the amino acid reactants in the presence of a polyol.
    Type: Grant
    Filed: April 15, 1986
    Date of Patent: June 19, 1990
    Assignee: Synthetech, Inc.
    Inventors: Duane C. Ulmer, Mary S. Rosendahl