Granted Patent
Utility
US 4,502,995 · App. 06/452,518
Nucleophilic substitution process
Inventors:
Barbara C. Stahly, G. Patrick Stahly
Patented Case
View Patent ↗
Granted: Mar 5, 1985
Filed: Dec 23, 1982
Inventors
Barbara C. Stahly
G. Patrick Stahly
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.