Patents by Inventor Edward E. Logsdon

Edward E. Logsdon 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 purifying growth hormone-like materials
    Patent number: 4612367
    Abstract: This specification describes a process for separating impurities from an impure mixture containing growth hormone-like material with substantially complete recovery of said growth hormone-like material, which comprises:(1) applying said mixture to a reverse phase macroporous acrylate ester copolymer resin support at a pH of from about 7 to about 9; and(2) eluting said growth hormone-like material from said support with an aqueous eluant having a pH of from about 7 to about 9 and containing from about 20% to about 80% by volume of an organic diluent selected from the group consisting of acetone, acetonitrile, and a combination of acetone and acetonitrile.
    Type: Grant
    Filed: April 8, 1985
    Date of Patent: September 16, 1986
    Assignee: Eli Lilly and Company
    Inventors: Edward L. Grinnan, Edward E. Logsdon