Patents by Inventor Fred R. Naider

Fred R. Naider 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).

  • Urethane-protected amino acid-N-carboxyanhydrides
    Patent number: 5028693
    Abstract: Urethane-protected NCAs and MTAs are prepared by reacting an NCA or NTA with a haloformate in an inert diluent, under anhydrous conditions and in the presence of a tertiary nitrogen-containing base having an atom or functional group sufficiently electron rich and positioned relative to the nitrogen of said base so as to render said atom or group capable of complexing with the H--N< group of said N-carboxyanhydride or N-thiocarboxyanhydride but able to generate N-carboxyanhydride or N-thiocarboxyanhydride anionic complexes capable of reacting with the haloformate.
    Type: Grant
    Filed: July 13, 1989
    Date of Patent: July 2, 1991
    Assignee: Bioresearch, Inc.
    Inventors: William D. Fuller, Michael P. Cohen, Fred R. Naider, Murray Goodman
  • Urethane-protected amino acid-N-carboxyanhydrides
    Patent number: 4946942
    Abstract: The invention relates to urethane-protected amino acid-N-carboxyanhydride and N-thiocarboxyanhydride compounds which are useful in peptide, polypeptide and protein synthesis. Disclosed herein is the preparation and use of these novel compounds.
    Type: Grant
    Filed: March 11, 1988
    Date of Patent: August 7, 1990
    Assignee: Bioresearch, Inc.
    Inventors: William D. Fuller, Michael P. Cohen, Fred R. Naider, Murray Goodman