Granted Patent
Utility
US 5,116,976 · App. 07/553,923
Hindered amine light stabilizer hydrazides
Inventor:
Terry N. Myers
Patented Case
View Patent ↗
Granted: May 26, 1992
Filed: Jul 17, 1990
Inventor
Terry N. Myers
Assignee (at issue)
Atochem North America, 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.