Granted Patent
Utility
US 5,681,900 · App. 08/537,866
Hydrogenated norbornene ring-opening polymerization product, a process for production thereof and uses thereof
Inventors:
Toshihide Murakami, Teiji Kohara, Tadao Natsuume
Patented Case
View Patent ↗
Granted: Oct 28, 1997
Filed: Jan 22, 1996
Inventors
Toshihide Murakami
Teiji Kohara
Tadao Natsuume
Assignee (at issue)
Nippon Zeon Co., Ltd.
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.