Granted Patent
Utility
US 5,554,501 · App. 08/145,939
Biopolymer synthesis using surface activated biaxially oriented polypropylene
Inventors:
Peter J. Coassin, Robert S. Matson, Jang B. Rampal
Patented Case
View Patent ↗
Granted: Sep 10, 1996
Filed: Oct 29, 1993
Inventors
Peter J. Coassin
Robert S. Matson
Jang B. Rampal
Assignee (at issue)
Beckman Instruments, 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.