Patents by Inventor Matsuhiko Aratani

Matsuhiko Aratani 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).

  • Cephalosporin analogues and processes for the preparation thereof
    Patent number: 4264597
    Abstract: Compounds of the formula ##STR1## wherein X is --O--or --S--;R.sup.1 is amino or a substituted amino group;R.sup.2 is carboxy or a protected carboxy group; and the heavy solid line means single or double bond; the compounds are useful in the treatment of infectious diseases particularly fungal infection, in human beings and animals.
    Type: Grant
    Filed: May 30, 1979
    Date of Patent: April 28, 1981
    Inventors: Masashi Hashimoto, Keiji Hemmi, Matsuhiko Aratani, Hidekazu Takeno, Daijiro Hagiwara
  • Cephalosporin analogues and processes for the preparation thereof
    Patent number: 4234724
    Abstract: Cephalosporin analogues represented by the formula ##STR1## wherein R.sup.1 is amino or a substituted amino,R.sup.2 is carboxy or a protected carboxy, andR.sup.3 is hydrogen or lower alkoxy, processes for making the same, azetidinone intermediates and pharmaceutical compositions comprising said cephalosporin analogues as active ingredients.
    Type: Grant
    Filed: December 22, 1978
    Date of Patent: November 18, 1980
    Assignee: Fujisawa Pharmaceutical Company, Limited
    Inventors: Masashi Hashimoto, Keiji Hemmi, Matsuhiko Aratani, Hidekazu Takeno, Daijiro Hagiwara