Granted Patent
Utility
US 5,043,372 · App. 07/454,889
N,N'-hydrocarbylenebis[N-hals-substituted amic acid hydrazides] and their derivatives
Inventor:
Ronald E. MacLeay
Patented Case
View Patent ↗
Granted: Aug 27, 1991
Filed: Dec 22, 1989
Inventor
Ronald E. MacLeay
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.