Granted Patent
Utility
US 4,902,824 · App. 07/191,641
Dispersant for vinyl acetate unit fouling
Inventor:
Allen R. Syrinek
Patented Case
View Patent ↗
Granted: Feb 20, 1990
Filed: May 9, 1988
Inventor
Allen R. Syrinek
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.