Granted Patent
Utility
US 4,757,129 · App. 06/899,570
Compositions for producing polymers of high refractive index and low yellowness
Inventor:
Stephanie J. Oates
Patented Case
View Patent ↗
Granted: Jul 12, 1988
Filed: Aug 25, 1986
Inventor
Stephanie J. Oates
Assignee (at issue)
PPG Industries, Inc.
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.