Patents by Inventor David H. S. Shean

David H. S. Shean 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).

  • Spray drying process for preparation of solid sodium amoxycillin
    Patent number: 4303582
    Abstract: Sodium amoxycillin is obtained by spray drying a solution of sodium amoxycillin in aqueous isopropyl alcohol, wherein the initial ratio of isopropyl alcohol to sodium amoxycillin present in the solution to be spray dried is from 5:3 to 3:1 w/w.
    Type: Grant
    Filed: May 23, 1980
    Date of Patent: December 1, 1981
    Assignee: Beecham Group Limited
    Inventors: David H. S. Shean, John R. Steel