Patents Assigned to Viscose Development Co., Ltd.
  • Ion exchange process using activated regenerated cellulose
    Patent number: 4154676
    Abstract: An ion exchange process is characterized by the use of an ion exchange cellulose made by reacting unregenerated cellulose with a monomeric substance having at least one ionizable chemical group which imparts ion exchange properties to the cellulose reaction product, and thereafter regenerating the activated cellulose reaction product to yield an activated regenerated cellulose having ion exchange properties.
    Type: Grant
    Filed: August 3, 1977
    Date of Patent: May 15, 1979
    Assignee: Viscose Development Co., Ltd.
    Inventors: David T. Jones, Kenneth R. Rees, George E. Jowett