Patents by Inventor Matsumura Hiromu

Matsumura Hiromu 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).

  • 7-Substituted aminoacetamido oxadethiacephalosporins
    Patent number: 4226864
    Abstract: Antibacterial 7-substituted aminoacetamido oxadethiacephalosporins of the formula: ##STR1## [wherein R is substituted amino, substituted phenyl, or 5- or 6-membered hetero ring; Ar is aryl; Y is hydrogen or methoxy; Het is 5- or 6-membered aromatic hetero ring; and Z is hydroxy or carboxy protecting group] preparable e.g. by acylation of 7.alpha.-methoxy-7.beta.-amino-3-heterocyclic thiomethyl-3-cephem-4-carboxylic acid derivatives, are highly active against gram-positive and gram-negative bacteria, especially those resistant to other cephalosporins and penicillins.
    Type: Grant
    Filed: August 22, 1977
    Date of Patent: October 7, 1980
    Assignee: Shionogi & Co., Ltd.
    Inventors: Masayuki Narisada, Teruji Tsuji, Mitsuru Yoshioka, Matsumura Hiromu, Yoshio Hamashima, Sadao Hayashi, Wataru Nagata