Granted Patent
Utility
US 5,010,139 · App. 07/366,330
Copolymers of ethylene oxide as antistatic additives
Inventor:
Simon H. Yu
Patented Case
View Patent ↗
Granted: Apr 23, 1991
Filed: Jun 14, 1989
Inventor
Simon H. Yu
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.