Patents by Inventor Tian Y. Zhang

Tian Y. Zhang 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).

  • Cross-axis synchronous flow through coil planet centrifuge for large scale preparative countercurrent chromatography
    Patent number: 5104531
    Abstract: A countercurrent chromatography apparatus and method where the column rotates about an axis spaced apart from, parallel to, and in the same radial plane as a radius extending from the central axis of revolution. The apparatus generates a unique force field which enables excellent separation.
    Type: Grant
    Filed: August 5, 1991
    Date of Patent: April 14, 1992
    Assignee: The United States of America as represented by the Department of Health and Human Services
    Inventors: Yoichiro Ito, Tian Y. Zhang