Patents by Inventor Gary A. Siwruk

Gary A. Siwruk 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).

  • Liquid phase synthesis of peptides and peptide derivatives
    Patent number: 5516891
    Abstract: A liquid phase peptide synthetic method which uses (1) Fmoc as the protecting group for the non-side chain amino functionality, (2) ammonia, a primary or secondary amine to remove the Fmoc protecting group, and (3) substituted carbodiimide as the coupling agent for the C to N synthesis of peptides or peptide derivatives in a proper organic solvent.
    Type: Grant
    Filed: May 25, 1994
    Date of Patent: May 14, 1996
    Assignee: Kinerton, Ltd.
    Inventors: Gary A. Siwruk, John S. Eynon