Granted Patent
Utility
US 4,343,720 · App. 05/963,606
Quaternary alkynoxymethyl amines
Inventor:
Patrick M. Quinlan
Patented Case
View Patent ↗
Granted: Aug 10, 1982
Filed: Nov 24, 1978
Inventor
Patrick M. Quinlan
Assignee (at issue)
Petrolite 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.