Granted Patent
Utility
US 5,206,378 · App. 07/791,716
Hydrazido functionalized 2-(2-hydroxyphenyl)-2H-benzotriazoles
Inventors:
Ronald E. MacLeay, Terry N. Myers
Patented Case
View Patent ↗
Granted: Apr 27, 1993
Filed: Nov 14, 1991
Inventors
Ronald E. MacLeay
Terry N. Myers
Assignee (at issue)
Elf 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.