Granted Patent
Utility
US 6,693,180 · App. 10/115,007
Composite sponge wound dressing made of &bgr;-Chitin and Chitosan and method for producing the same
Inventors:
Jui-Sheng Lee, Chun-Yuan Hsu, Wei-Hsin Lin
Patented Case
View Patent ↗
Granted: Feb 17, 2004
Filed: Apr 4, 2002
Inventors
Jui-Sheng Lee
Chun-Yuan Hsu
Wei-Hsin Lin
Assignee (at issue)
China Textile Institute
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.