Patents by Inventor Jun Ebashi

Jun Ebashi 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 producing ascorbic acid derivative
    Patent number: 5516919
    Abstract: Metal salts or substitutted or non-substituted ammonium salts of ascorbic acid derivatives can be produced in high yield by treating an acidic aqueous solution containing ascorbic acid-2-phosphate or ascorbic acid-2-sulfate with a porous adsorbent such as activated carbon, followed by treating the adsorbent with a basic aqueous solution containing e.g. a metal salt of an organic acid or substituted or non-substituted ammonium salt ion to elute the desired salt of ascorbic acid derivative.
    Type: Grant
    Filed: April 18, 1995
    Date of Patent: May 14, 1996
    Assignee: Wako Pure Chemical Industries, Ltd.
    Inventors: Atsunori Sano, Kuniaki Okamoto, Jun Ebashi