Patents by Inventor Roruro Endo

Roruro Endo 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).

  • Crystalline carbapenem derivative
    Patent number: 5424306
    Abstract: A storage stable form of the pivaloyloxymethyl ester of the carbapenem derivative known as (1R, 5S, 6S)-2-[(4R)-2-oxo-4-pyrrolidinylthio]-6-[(1R)-1-hydroxyethyl]-1-methyl-1-c arbapen-2-em-3-carboxylic acid in crystalline form.
    Type: Grant
    Filed: November 12, 1993
    Date of Patent: June 13, 1995
    Assignee: Sankyo Company, Limited
    Inventors: Isao Kawamoto, Masao Miyauchi, Roruro Endo