Granted Patent
Utility
US 4,436,642 · App. 06/349,597
Nonionic surfactants for automatic dishwasher detergents
Inventor:
Robert J. Scott
Patented Case
View Patent ↗
Granted: Mar 13, 1984
Filed: Feb 17, 1982
Inventor
Robert J. Scott
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.