Granted Patent
Utility
US 5,739,253 · App. 08/657,293
RIM elastomers based on prepolymers of cycloaliphatic diisocyanates
Inventors:
Neil H. Nodelman, David D. Steppan
Patented Case
View Patent ↗
Granted: Apr 14, 1998
Filed: Jun 4, 1996
Inventors
Neil H. Nodelman
David D. Steppan
Assignee (at issue)
Bayer Aktiengesellschaft
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.