Granted Patent
Utility
US 4,201,786 · App. 05/801,333
Water soluble pesticidal quaternary ammonium salt compounds
Inventor:
Barbara W. Kaplan
Patented Case
View Patent ↗
Granted: May 6, 1980
Filed: May 27, 1977
Inventor
Barbara W. Kaplan
Assignee (at issue)
Union Carbide 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.