Granted Patent
Utility
US 5,631,329 · App. 08/408,833
Process for producing hyper-comb-branched polymers
Inventors:
Rui Yin, Donald A. Tomalia, David M. Hedstrand, Douglas R. Swanson
Patented Case
View Patent ↗
Granted: May 20, 1997
Filed: Mar 21, 1995
Inventors
Rui Yin
Donald A. Tomalia
David M. Hedstrand
Douglas R. Swanson
Assignee (at issue)
Dendritech 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.