Patents by Inventor Shuryo Nakai

Shuryo Nakai 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).

  • Production and use of modified cystatins
    Patent number: 6534477
    Abstract: Cystatins that have been modified by glycosylation in order to enhance stability and activity are disclosed, as are methods of making such cystatins and methods of using such cystatins to inhibit proteolysis.
    Type: Grant
    Filed: February 2, 2001
    Date of Patent: March 18, 2003
    Assignee: The University of British Columbia
    Inventors: Shuryo Nakai, Masahiro Ogawa, Soichiro Nakamura
  • Production and use of modified cystatins
    Publication number: 20020137671
    Abstract: Cystatins that have been modified by glycosylation in order to enhance stability and activity are disclosed, as are methods of making such cystatins and methods of using such cystatins to inhibit proteolysis.
    Type: Application
    Filed: February 2, 2001
    Publication date: September 26, 2002
    Inventors: Shuryo Nakai, Masahiro Ogawa, Soichiro Nakamura
  • Process for isolation of lysozyme and avidin from egg white
    Patent number: 4966851
    Abstract: A process for the isolation and separation of lysozyme and avidin from egg white is carried out by:step (a) contacting egg white with a weakly acidic cation exchange resin whereby lysozyme and avidin are adsorbed on to the resin; separating the resin from the egg white and washing the resin to remove residual egg white therefrom; and contacting the washed resin with a low ionic strength eluting buffer whereby lysozyme is eluted from the resin while avidin remains adsorbed on the resin; andstep (b) repeating the complete procedure defined in step (a) for two or more times; andstep (c) finally contacting the resin containing accumulated adsorbed avidin with a high ionic strength eluting buffer whereby avidin is eluted from the resin.Lysozyme and avidin are both commercial products useful, for example, in pharmaceutical applications.
    Type: Grant
    Filed: November 19, 1987
    Date of Patent: October 30, 1990
    Assignee: The University of British Columbia
    Inventors: Timothy Durance, Eunice Li-Chan, Shuryo Nakai
  • Novel process for lowering the concentration of .beta.-lactoglobulin in cheese whey
    Patent number: 4849241
    Abstract: A process for lowering the concentration of .beta.-lactoglobulin in cheese whey while retaining the immunoglobulins in said cheese whey which comprises treating said cheese whey with a polyphosphate, such as sodium hexametaphosphate, within a pH range of from about 3.8 to about 4.7.
    Type: Grant
    Filed: January 25, 1988
    Date of Patent: July 18, 1989
    Assignee: The University of British Columbia
    Inventors: Shalan A. Al-Mashiki, Shuryo Nakai