Granted Patent
Utility
US 4,724,142 · App. 07/075,905
Synergistic microbiocidal compositions containing a mixture of a N-alkyl dimethylbenzylammonium halide and an acrolein/formaldehyde polycondensation product
Inventors:
Frederick R. Mahn, Lora J. Bogdany, Joseph J. Baron, Jr., Edward G. Knapick, Edward M. Antonucci
Patented Case
View Patent ↗
Granted: Feb 9, 1988
Filed: Jul 20, 1987
Inventors
Frederick R. Mahn
Lora J. Bogdany
Joseph J. Baron, Jr.
Edward G. Knapick
Edward M. Antonucci
Assignee (at issue)
Drew Chemical 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.