Patents by Inventor Haiil Ryu

Haiil Ryu 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 preparing pulp from cornstalk
    Patent number: 7186316
    Abstract: Disclosed is a method for preparing paper pulp from cornstalks comprising the steps of cooking, washing, screening, thickening, bleaching, beating and drying performed under moderate conditions which have little noxious effects on the environment. By using cornstalks as raw materials for paper pulp, it becomes possible to replace import of wood raw materials, to save foreign currency, to increase rural income, and to make high quality paper.
    Type: Grant
    Filed: June 29, 2000
    Date of Patent: March 6, 2007
    Assignee: CP & P Co., Ltd.
    Inventors: Haiil Ryu, Chul Kap Kim, Jong-Myoung Won
  • Method for producing corn stalk pulp and paper products from corn stalk pulp
    Publication number: 20040256065
    Abstract: A new method for making pulp out of agricultural residue includes harvesting certain portion of plant stalk. The harvested plant stalk is bailed, transported and stored. At the mill, the plant stalk is chopped and goes through pulping process. The pulp is used to make varieties of papers with or without blending other wood based pulp.
    Type: Application
    Filed: June 18, 2003
    Publication date: December 23, 2004
    Inventors: Aziz Ahmed, Jong-Myoung Won, Haiil Ryu