Patents by Inventor Mark R. Walden

Mark R. Walden 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 transforming a human insulin precursor to human insulin
    Patent number: 5457066
    Abstract: This specification describes a process for converting a human insulin precursor to human insulin, which comprises treating such human insulin precursor with trypsin and carboxypeptidase B in an aqueous medium containing per mole of human insulin precursor from about 0.1 to about 10 moles of one or more metal ions of those metals having Atomic Numbers 21 to 34, 39 to 52, 57 to 84, and 89 to 92.
    Type: Grant
    Filed: May 11, 1992
    Date of Patent: October 10, 1995
    Assignee: Eli Lilly and Company
    Inventors: Bruce H. Frank, Walker E. Prouty, Richard E. Heiney, Mark R. Walden