Granted Patent
Utility
US 6,599,524 · App. 10/132,630
Oriented biopolymeric membrane
Inventors:
Shu-Tung Li, Debbie Yuen
Patented Case
View Patent ↗
Granted: Jul 29, 2003
Filed: Apr 25, 2002
Inventors
Shu-Tung Li
Debbie Yuen
Assignee (at issue)
Collagen Matrix, 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.