Patents by Inventor Francis E. Desposato

Francis E. Desposato 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 preparing erythromycin succinate
    Patent number: 4219641
    Abstract: A rapid and efficient process for preparing the useful antibiotic erythromycin ethyl succinate in high yield which comprises reacting erythromycin USP quality free base with ethyl succinyl chloride in a two phase system consisting of an organic solvent which is capable of forming two phases with water or an aqueous base, and an aqueous base.
    Type: Grant
    Filed: June 14, 1979
    Date of Patent: August 26, 1980
    Assignee: The Upjohn Company
    Inventors: Francis E. Desposato, Edward J. Hessler