Patents by Inventor Claudia Gr afe

Claudia Gr afe 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).

  • Chromatographic process for purification of insulin
    Patent number: 5621073
    Abstract: A process is described for obtaining insulin, which is virtually free from proteases and/or insulin acetylated at position A9, by chromatography in aqueous, buffered solvents which contain water-miscible organic solvents, on lipophilically modified silica gel, wherein the dissolving buffer contains acetone or acetonitrile.
    Type: Grant
    Filed: April 28, 1995
    Date of Patent: April 15, 1997
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Rainer Dickhardt, Bernhard Unger, Claudia Gr afe