Patents by Inventor Loren H. Dill

Loren H. Dill 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).

  • Conversion of cephalosporin hydrohalide salt to alkali metal salt
    Patent number: 4937330
    Abstract: The present invention relates to processes for the preparation of alkali metal salts of amino acids. Preferably, the present invention relates to solid phase alkali metal salts of cephalosporins of formula III, wherein M is selected from the group consisting of sodium, potassium and lithium, characterized by birefringent lath- and rod-shaped particles, and processes for their manufacture.
    Type: Grant
    Filed: April 10, 1987
    Date of Patent: June 26, 1990
    Assignee: The Upjohn Company
    Inventors: Clifford E. Sacks, Loren H. Dill