Granted Patent
Utility
US 5,081,210 · App. 07/478,188
Polyurethane elastomers
Inventors:
Ashok M. Sarpeshkar, Charles S. Gracik
Patented Case
View Patent ↗
Granted: Jan 14, 1992
Filed: Feb 9, 1990
Inventors
Ashok M. Sarpeshkar
Charles S. Gracik
Assignee (at issue)
Mobay Corporation
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.