Patents by Inventor Carol L. Keefer

Carol L. Keefer 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).

  • Patent number: 5096822
    Abstract: The present invention is directed to a bovine embryo culture medium. The medium includes a culture solution containing the nutritional substances necessary to support a bovine embryo. One of the nutritional substances is hemicalcium lactate in an amount effective to maintain the health and viability of the bovine embryo. The culture medium is a preferred nuclear transfer medium.
    Type: Grant
    Filed: July 26, 1990
    Date of Patent: March 17, 1992
    Assignees: W. R. Grace & Co.- Conn., Charles F. Rosenkrans, Jr., Michelle M. Sims
    Inventors: Charles F. Rosenkrans, Jr., Carol L. Keefer, Michelle M. Sims