Granted Patent
Utility
US 4,489,008 · App. 06/406,134
Hydroxyl-terminated liquid polymers
Inventor:
Changkiu K. Riew
Patented Case
View Patent ↗
Granted: Dec 18, 1984
Filed: Aug 9, 1982
Inventor
Changkiu K. Riew
Assignee (at issue)
B. F. Goodrich Company
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.