Granted Patent
Utility
US 5,730,824 · App. 08/677,780
Method of extruding and bonding biodegradable structured packing
Inventors:
Orville Spence, Beth C. Tormey
Patented Case
View Patent ↗
Granted: Mar 24, 1998
Filed: Jul 10, 1996
Inventors
Orville Spence
Beth C. Tormey
Assignees (at issue)
American Excelsior Company
National Starch and Chemical Investment Holding Copporation
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.