Granted Patent
Utility
US 4,430,196 · App. 06/479,386
Method and composition for neutralizing acidic components in petroleum refining units
Inventor:
Joseph H. Y. Niu
Patented Case
View Patent ↗
Granted: Feb 7, 1984
Filed: Mar 28, 1983
Inventor
Joseph H. Y. Niu
Assignee (at issue)
Betz Laboratories, Inc.
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.