Granted Patent
Utility
US 5,115,060 · App. 07/616,977
Alternating copolymers of olefinically unsaturated sulfonate salts and unsaturated imides
Inventor:
Roger A. Grey
Patented Case
View Patent ↗
Granted: May 19, 1992
Filed: Nov 21, 1990
Inventor
Roger A. Grey
Assignee (at issue)
Arco Chemical Technology, L.P.
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.