Patents by Inventor C. Richard Savage, Jr.

C. Richard Savage, Jr. 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).

  • Process for the preparation of epidermal growth factor and new derivative using cross-linked polyacrylamide gel at a pH of 1-3
    Patent number: 3948875
    Abstract: A new procedure has been devised for the preparation of pure epidermal growth factor (EGF) in high yield which involves passing homogenates of submaxillary glands of adult male mice through a polyacrylamide gel column of a low acid pH. Preferably a two step procedure is used wherein the fraction obtained from the polyacrylamide gel chromatography is subjected to DEAE-cellulose chromatography.The new procedure also provides a new derivative of EGF, lacking the COOH-terminal Leu-Arg residues.
    Type: Grant
    Filed: November 27, 1973
    Date of Patent: April 6, 1976
    Inventors: Stanley Cohen, C. Richard Savage, Jr.