Patents by Inventor Toshikatsu Shindo

Toshikatsu Shindo 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).

  • METHOD FOR PURIFICATION OF OLIGOPEPTIDES
    Publication number: 20090306340
    Abstract: The present invention provides: a method for purifying an oligopeptide, which comprises a step of contacting a solution comprising the oligopeptide and a neutral amino acid with an ion exchange resin in an effective pH range; the method for purifying an oligopeptide, which comprises (a) a step of passing a solution comprising the oligopeptide and the neutral amino acid through a column packed with an ion exchange resin, and (b) a step of eluting the oligopeptide contacted with the ion exchange resin with an eluting solvent; the above method using a weakly acidic cation exchange resin; the above method using a weakly basic anion exchange resin, etc.
    Type: Application
    Filed: June 28, 2007
    Publication date: December 10, 2009
    Applicant: KYOWA HAKKO BIO CO., LTD.
    Inventors: Shizuo Tsuchiya, Tetsuo Nishimura, Toshikatsu Shindo