Granted Patent
Utility
US 5,580,923 · App. 08/403,360
Anti-adhesion films and compositions for medical use
Inventors:
Jeffrey E. Yeung, George H. Chu, Frank DeLustro, Woonza M. Rhee
Patented Case
View Patent ↗
Granted: Dec 3, 1996
Filed: Mar 14, 1995
Inventors
Jeffrey E. Yeung
George H. Chu
Frank DeLustro
Woonza M. Rhee
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.