Granted Patent
Utility
US 4,945,154 · App. 07/377,116
Densified polyethersulfone
Inventors:
Mounir M. Ghali, Winston L. Hedges
Patented Case
View Patent ↗
Granted: Jul 31, 1990
Filed: Jul 7, 1989
Inventors
Mounir M. Ghali
Winston L. Hedges
Assignee (at issue)
Hexcel 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.