Granted Patent
Utility
US 5,256,276 · App. 07/884,671
Method for the inhibition and removal of ammonium chloride deposition in hydrocarbon processing units by adding lecithin
Inventor:
Carl E. Weaver
Patented Case
View Patent ↗
Granted: Oct 26, 1993
Filed: May 18, 1992
Inventor
Carl E. Weaver
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.