Patents by Inventor Hiroshi Mitsuhashi

Hiroshi Mitsuhashi 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).

  • Extracts of Marsdenia cundurango Reichenbach fil
    Patent number: 4320119
    Abstract: New extracts of Marsdenia cundurango Reichenbach fil., processes for preparing them, antitumor agents comprising them, compositions containing them and methods of treating tumor with them are described herein in which the extracts consist essentially of the portion of Marsdenia cundurango Reichenbach fil. which is soluble in lower alcohols and in chlorinated hydrocarbons other than carbon tetrachloride and is insoluble in aliphatic hydrocarbons.
    Type: Grant
    Filed: August 18, 1980
    Date of Patent: March 16, 1982
    Assignee: Kenyaky Yogyo Kabushiki Kaisha
    Inventors: Den-ichi Mizuno, Hiroshi Mitsuhashi, Shigeru Abe, Koji Hayashi