Granted Patent
Utility
US 5,747,475 · App. 08/720,685
Chitosan-derived biomaterials
Inventors:
Robert E. Nordquist, Wei-Ren Chen, Raoul Carubelli, Robert Adams
Patented Case
View Patent ↗
Granted: May 5, 1998
Filed: Oct 2, 1996
Inventors
Robert E. Nordquist
Wei-Ren Chen
Raoul Carubelli
Robert Adams
Assignee (at issue)
WOUND HEALING OF OKLAHOMA
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.