Granted Patent
Utility
US 5,800,541 · App. 08/780,470
Collagen-synthetic polymer matrices prepared using a multiple step reaction
Inventors:
Woonza M. Rhee, Richard A. Berg
Patented Case
View Patent ↗
Granted: Sep 1, 1998
Filed: Jan 8, 1997
Inventors
Woonza M. Rhee
Richard A. Berg
Assignee (at issue)
COLLAGEN CORPORATION
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.