Granted Patent
Utility
US 6,187,859 · App. 09/175,141
Light stable aliphatic thermoplastic urethane elastomers and method of making same
Inventors:
William M. Humphrey, Victor E. Gerard
Patented Case
View Patent ↗
Granted: Feb 13, 2001
Filed: Oct 19, 1998
Inventors
William M. Humphrey
Victor E. Gerard
Assignee (at issue)
Davidson Textron, 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.