Patents by Inventor Shu-I Tu

Shu-I Tu 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).

  • Immobilization of bioactive protein in phyllosilicates
    Patent number: 6180378
    Abstract: Immobilized bioactive protein compositions are prepared containing a bioactive protein such as an enzyme intercalated into galleries of a phyllosilicate, and a crosslinking compound crosslinking the phyllosilicate and the bioactive protein. The phyllosilicate may contain sodium or alkylammonium ions and be montmorillonite. The protein may be lipoxygenase, and crosslinking compounds include tetramethyl orthosilicate, tetraethoxy silicate, propyltrimethoxy silicate, polydimethylortho silicate and methyltrimethoxy silicate. The composition is prepared by delaminating a sodium-saturated phyllosilicate, mixing a bioactive protein with the delaminated phyllosilicate and crosslinking with a crosslinking compound. After crosslinking, the composition may be vacuum dried and ground.
    Type: Grant
    Filed: January 29, 1999
    Date of Patent: January 30, 2001
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Siyuan Shen, An-Fei Hsu, Thomas A. Foglia, Shu-I Tu