Patents by Inventor Robert E. Lakin

Robert E. Lakin 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).

  • Simplified process of forming crystalline ceftazidime pentahydrate
    Patent number: 4616080
    Abstract: Ceftazidime pentahydrate in crystalline form is provided in a one-step process comprising acidic removal of protecting groups from an amino-protected and carboxy-protected ceftazidime, separation of aqueous phase after addition of a water-immiscible organic solvent, and precipitation of pentahydrate by adjusting pH of aqueous phase from about 3.5 to about 4.5.
    Type: Grant
    Filed: July 2, 1984
    Date of Patent: October 7, 1986
    Assignee: Eli Lilly and Company
    Inventors: Ta-Sen Chou, Robert E. Lakin