Granted Patent
Utility
US 6,365,674 · App. 08/802,294
Thermoplastic polyurethane resin
Inventors:
Wolfgang Kaufhold, James W. Rosthauser, Jeffrey S. Wiggins
Patented Case
View Patent ↗
Granted: Apr 2, 2002
Filed: Feb 18, 1997
Inventors
Wolfgang Kaufhold
James W. Rosthauser
Jeffrey S. Wiggins
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.