Granted Patent
Utility
US 6,740,728 · App. 10/153,703
Methods for the preparation of polyesters, poly(ester amide)s and poly(ester imide)s and uses of the materials obtained therefrom
Inventors:
Yong Ding, Benjamin Bikson
Patented Case
View Patent ↗
Granted: May 25, 2004
Filed: May 24, 2002
Inventors
Yong Ding
Benjamin Bikson
Assignee (at issue)
Praxair Technology, Inc.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.