Granted Patent
Utility
US 5,420,194 · App. 08/194,677
.alpha.olefin/maelic anhydride copolymers as antifoulants in ethylene process water stripper systems
Inventors:
Carl T. Rowe, Sherri L. Fisher
Patented Case
View Patent ↗
Granted: May 30, 1995
Filed: Feb 14, 1994
Inventors
Carl T. Rowe
Sherri L. Fisher
Assignee (at issue)
Nalco Chemical Company
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.