Granted Patent
Utility
US 5,777,178 · App. 08/769,619
Process for the preparation of polyoxyalkylene ether surfactant compositions
Inventor:
Ming-Tung Shen
Patented Case
View Patent ↗
Granted: Jul 7, 1998
Filed: Dec 18, 1996
Inventor
Ming-Tung Shen
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.