Granted Patent
Utility
US 4,948,856 · App. 07/052,878
Homogeneous addition copolymers of ethylene and cycloolefin monomers and method for producing same
Inventors:
Robert J. Minchak, James T. Ware
Patented Case
View Patent ↗
Granted: Aug 14, 1990
Filed: May 22, 1987
Inventors
Robert J. Minchak
James T. Ware
Assignee (at issue)
B. F. Goodrich Company
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.