Granted Patent
Utility
US 4,745,189 · App. 06/877,154
Method of preparing N-halogenated organic heterocyclic compounds
Inventors:
John Y. Lee, Mark Templeton
Patented Case
View Patent ↗
Granted: May 17, 1988
Filed: Jun 23, 1986
Inventors
John Y. Lee
Mark Templeton
Assignee (at issue)
Ethyl Corporation
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.