Patents by Inventor Ryoichi Umemoto

Ryoichi Umemoto 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).

  • Adsorbent for cellular fibronectin and a method for fractional purification of fibronectin
    Patent number: 5324823
    Abstract: The invention provides a selective adsorbent for cellular fibronectin (cFN) and a method for fractional purification of FN which includes contacting an FN material containing plasma fibronectin (pFN) and cFN with a crosslinked polysaccharide sulfate and/or an immobilized polysaccharide sulfate to fractionate the pFN and cFN.By the fractional purification method of the invention, cFN and pFN can be fractionated in an expedient manner and with high efficiency and both pFN and cFN can be recovered in high purity and good yield.
    Type: Grant
    Filed: November 19, 1992
    Date of Patent: June 28, 1994
    Assignee: Otsuka Pharmaceutical Factory, Inc.
    Inventors: Kaneji Asakawa, Ryoichi Umemoto, Kazuo Hino, Eiji Sakashita, Takashi Komai