Granted Patent
Utility
US 6,140,416 · App. 09/368,041
Polyether amine modification of polypropylene
Inventors:
Randall Keith Evans, Richard J. G. Dominguez, Richard J. Clark
Patented Case
View Patent ↗
Granted: Oct 31, 2000
Filed: Aug 3, 1999
Inventors
Randall Keith Evans
Richard J. G. Dominguez
Richard J. Clark
Assignee (at issue)
HUNTSMAN PETROCHEMICAL LLC
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.