Patents by Inventor Kazuo Wakihira

Kazuo Wakihira 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 preparing anthocyans from corresponding flavonoid glycosides
    Patent number: 4255563
    Abstract: A process for preparing anthocyans by reducing the corresponding flavonoid glycosides with a metal and acid at temperatures not higher than 30.degree. C. under acidic conditions, precipitating the anthocyans formed from the reduction reaction as a metal salt by neutralizing the reaction solution with an alkali and isolating the free anthocyans by decomposing the metal salt with concentrated hydrochloric acid.
    Type: Grant
    Filed: February 2, 1979
    Date of Patent: March 10, 1981
    Assignee: Shiraimatsu Shinyaku Company, Ltd.
    Inventors: Kazuo Wakihira, Satoshi Kikumoto, Hiroshi Kigawa, Osamu Nozaki, Michio Minami