Granted Patent
Utility
US 5,273,677 · App. 07/856,139
Rinse aids comprising ethoxylated-propoxylated surfactant mixtures
Inventor:
Shoaib Arif
Patented Case
View Patent ↗
Granted: Dec 28, 1993
Filed: Mar 20, 1992
Inventor
Shoaib Arif
Assignee (at issue)
Olin 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.