Granted Patent
Utility
US 5,115,079 · App. 07/691,757
Cured bisphenol ether products
Inventor:
Pui K. Wong
Patented Case
View Patent ↗
Granted: May 19, 1992
Filed: Apr 26, 1991
Inventor
Pui K. Wong
Assignee (at issue)
SHELL OIL 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.