Patents by Inventor Mariko Kawabata

Mariko Kawabata 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-((5'-N-Methylthioacetamido)-adipoamido)cephalosporin derivatives
    Patent number: 4091217
    Abstract: New N-substituted thio (or sulfinyl) aliphatic acylcephalosporin C and derivatives thereof in the 3-position have been prepared. The compounds are useful as intermediates for recovering cephalosporin C and deacetoxycephalosporin C from fermentation broths thereof and also for preparing 7-aminocephalosporanic acid and derivatives thereof in the 3-position.
    Type: Grant
    Filed: December 9, 1976
    Date of Patent: May 23, 1978
    Inventors: Toshiyasu Ishimaru, Mariko Kawabata
  • 7-[(5'-N-methylthioacetamido)-adipoamido] cephalosporin derivatives
    Patent number: 4036833
    Abstract: New N-substituted thio (or sulfinyl) aliphatic acylcephalosporin C and their derivatives at the 3rd position have been prepared. The compounds are useful as intermediates for recovering cephalosporin C and deacetoxycephalosporin C from their fermentation broth and also for preparing 7-aminocephalosporanic acid and its derivatives at the 3rd position.
    Type: Grant
    Filed: May 27, 1975
    Date of Patent: July 19, 1977
    Inventors: Toshiyasu Ishimaru, Mariko Kawabata