Granted Patent
Utility
US 4,477,372 · App. 06/377,643
Anionic nonionic surfactant mixture
Inventor:
Anthony J. O'Lenick, Jr.
Patented Case
View Patent ↗
Granted: Oct 16, 1984
Filed: May 13, 1982
Inventor
Anthony J. O'Lenick, Jr.
Assignee (at issue)
Henkel Limited
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.