Patents Assigned to Kabaushiki Kaisha Riverson
  • Polyphenol derivative and method for producing the same
    Patent number: 8558016
    Abstract: A novel substance exhibiting physiologically active effects is produced from a tea leaf. A novel polyphenol derivative is produced, for example, by subjecting a microbially fermented tea leaf obtained by culturing Aspergillus sp. (PK-1) with a tea leaf, to an extraction treatment.
    Type: Grant
    Filed: September 17, 2010
    Date of Patent: October 15, 2013
    Assignees: Kabaushiki Kaisha Riverson, Saga University
    Inventors: Teruyoshi Yanagita, Kanji Ishimaru, Takashi Tanaka, Kazunori Koba, Hitoshi Miyazaki, Naohito Aoki, Denbei Kawamura