Patents by Inventor Wanda J. Stringfield

Wanda J. Stringfield 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).

  • Betastructured mixed organic and inorganic cation exchanged layered materials and nanocomposites
    Patent number: 6869674
    Abstract: A cation exchanging layered material having a cation exchange capacity satisfied by ion-exchangeable organic and inorganic cations, the ion-exchangeable organic cation content of the betastructured cation exchanging layered material being in the range of from ten to ninety-five percent of the cation exchange capacity of the cation exchanging layered material. The structure of the material is unique and is defined as a “betastructure”. A nanocomposite polymer incorporating such a “betastructured” cation exchanging layered material with a polymer.
    Type: Grant
    Filed: May 19, 2003
    Date of Patent: March 22, 2005
    Assignee: Dow Global Technologies Inc.
    Inventors: Malcolm F. Finlayson, Chai-Jing Chou, Michael S. Paquette, Hoang T. Pham, John Newton, Wanda J. Stringfield, Alexander B. Morgan
  • Betastructured mixed organic and inorganic cation exchanged layered materials and nanocomposites
    Publication number: 20040033392
    Abstract: A cation exchanging layered material having a cation exchange capacity satisfied by ion-exchangeable organic and inorganic cations, the ion-exchangeable organic cation content of the betastructured cation exchanging layered material being in the range of from ten to ninety-five percent of the cation exchange capacity of the cation exchanging layered material. The structure of the material is unique and is defined as a “betastructure”. A nanocomposite polymer incorporating such a “betastructured” cation exchanging layered material with a polymer.
    Type: Application
    Filed: May 19, 2003
    Publication date: February 19, 2004
    Inventors: Malcolm F. Finlayson, Chai-Jing Chou, Michael S. Paquette, Hoang T. Pham, John Newton, Wanda J. Stringfield, Alexander B. Morgan