Patents by Inventor Eichi Soma

Eichi Soma 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).

  • Process for the production of polysaccharide RBS substance
    Patent number: 4366308
    Abstract: Polysaccharide RBS substance is obtained from rice bran by extraction it with hot water. RBS substance is utilized for antitumor agent.
    Type: Grant
    Filed: August 1, 1980
    Date of Patent: December 28, 1982
    Assignees: Sapporo Breweries Limited, Etsuo Ito, Daicel Chemical Industries, Ltd.
    Inventors: Eichi Soma, Kohei Kobayashi, Takuro Karakawa, Shigeyoshi Kato, Kiichi Uchida
  • Polysaccharide RBS substance and antitumor agent containing same
    Patent number: 4357323
    Abstract: A polysaccharide RBS substance having the ultraviolet absorption spectrum depicted in FIG. 1 and the infrared absorption spectrum depicited in FIG. 2 is obtained from rice bran by extraction with hot water. These substances have been tested for anti-tumor activity against Sarcoma 180 ascites tumor and against Ehrlich ascites tumor and were determined to have anti-tumor activity against these tested tumors.
    Type: Grant
    Filed: August 1, 1980
    Date of Patent: November 2, 1982
    Assignees: Sapporo Breweries Limited, Etsuo Ito, Daicel Chemical Industries, Ltd.
    Inventors: Eichi Soma, Kohei Kobayashi, Takuro Karakawa, Shigeyoshi Kato, Kiichi Uchida