Patents by Inventor Heng-Zhen Shi

Heng-Zhen Shi 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).

  • Homostructured mixed organic and inorganic cation exchanged tapered compositions
    Patent number: 5993769
    Abstract: Homostructured, cation exchanged, layered compositions containing mixed onium and alkali metal, alkaline earth metal, protonated hydronium ions and mixtures thereof are described. Particulate concentrates formed by intercalation of a polymer component into the galleries of the layered inorganic and organic homostructured layered cation exchange composition and to the use of the particulate concentrates for the preparation of cured polymer-inorganic nanolayer hybrid composite compositions are described. In the most preferred embodiment of the invention the layered inorganic composition is selected from the family of 2:1 layered silicate clays.
    Type: Grant
    Filed: May 14, 1998
    Date of Patent: November 30, 1999
    Assignee: Board of Trustees operating Michigan State University
    Inventors: Thomas J. Pinnavaia, Heng-Zhen Shi, Tie Lan
  • Homostructured mixed organic and inorganic cation exchanged tapered compositions
    Patent number: 5866645
    Abstract: Homostructured, cation exchanged, layered compositions containing mixed onium and alkali metal, alkaline earth metal, protonated hydronium ions and mixtures thereof are described. Particulate concentrates formed by intercalation of a polymer component into the galleries of the layered inorganic and organic homostructured layered cation exchange composition and to the use of the particulate concentrates for the preparation of cured polymer-inorganic nanolayer hybrid composite compositions are described. In the most preferred embodiment of the invention the layered inorganic composition is selected from the family of 2:1 layered silicate clays.
    Type: Grant
    Filed: November 14, 1996
    Date of Patent: February 2, 1999
    Assignee: Board of Trustees operating Michigan State University
    Inventors: Thomas J. Pinnavaia, Heng-Zhen Shi, Tie Lan