Patents by Inventor Yong Ding

Yong Ding 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).

  • Methods for the preparation of polyesters, poly (ester amide) s and poly (ester imide) s and uses of the materials obtained therefrom
    Publication number: 20030233933
    Abstract: The present invention relates to methods for the preparation of polyesters, poly(ester amide)s and poly(ester imide)s. The materials obtained by the methods of present invention are useful as fluid separation membranes and as high performance materials.
    Type: Application
    Filed: May 24, 2002
    Publication date: December 25, 2003
    Inventors: Yong Ding, Be Njamin Bikson
  • Novel polyimide amic acid salts and polyimide membranes formed therefrom
    Publication number: 20030164090
    Abstract: The invention relates to preparation and uses of novel polymeric materials, polyimide amic acid salts (PIAAS). The use of these materials for the fabrication of fluid separation membranes is further disclosed.
    Type: Application
    Filed: January 23, 2003
    Publication date: September 4, 2003
    Inventors: Yong Ding, Benjamin Bikson, Joyce Katz Nelson, James Timothy Macheras
  • Production and use of improved polyimide separation membranes
    Patent number: 6497747
    Abstract: A process for preparing polyimide gas separation membranes is disclosed. The process involves preparing polyamic acid salt membrane precursors that are converted into polyimide membranes by mild thermal or chemical treatments. The gas separation processes that utilize these polyimide membranes are further disclosed.
    Type: Grant
    Filed: September 24, 1999
    Date of Patent: December 24, 2002
    Assignee: Praxair Technology, Inc.
    Inventors: Yong Ding, Benjamin Bikson, Joyce Katz Nelson