Patents by Inventor Eui-Boo Cho

Eui-Boo Cho 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).

  • Absorbent material having improved absorbent permeability and methods for making the same
    Patent number: 6011196
    Abstract: An absorbent material with substantially improved liquid permeability such that it is not subject to gel blocking while maintaining a preferred absorbent capacity is disclosed. The absorbent material is in particulate form and is the reaction product of a water-insoluble, absorbent, hydrogel-forming polymer and a polycationic polymer, the reaction forming a covalent bond between the polymers. After the reaction, the absorbent material has a Saline Flow Conductivity greater than (500-11.5.multidot.GV)(10.sup.-7) cm.sup.3 sec/g where GV is the gel volume of the absorbent material.
    Type: Grant
    Filed: April 16, 1998
    Date of Patent: January 4, 2000
    Assignee: The Procter & Gamble Company
    Inventors: Lin Wang, Ebrahim Rezai, Yumiko Hayashi, Eui-Boo Cho