Granted Patent
Utility
US 6,566,482 · App. 10/014,050
Process for the preparation of polyurethane elastomers with a high heat distortion temperature
Inventors:
Peter Haas, Hans-Detlef Arntz
Patented Case
View Patent ↗
Granted: May 20, 2003
Filed: Dec 11, 2001
Inventors
Peter Haas
Hans-Detlef Arntz
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.