Patents by Inventor Yasutsugu Ueda

Yasutsugu Ueda 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).

  • Antibacterial agents of the .beta.-lactam type
    Patent number: 4182711
    Abstract: There is described the preparation of novel 2-penem-3-carboxylic acid compounds having the formula ##STR1## and easily cleavable esters and carboxylic acid salts thereof. The compounds of formula I, particularly the dextrorotatory isomers thereof, are potent antibacterial agents or are of use as intermediates in the preparation of such agents.
    Type: Grant
    Filed: April 27, 1978
    Date of Patent: January 8, 1980
    Assignee: Bristol-Myers Company
    Inventor: Yasutsugu Ueda