Granted Patent
Utility
US 5,259,934 · App. 07/824,021
Process for removing acid from a hydroxylamine salt solution containing excess acid
Inventors:
Hossein Sharifian, Steven R. Wilson
Patented Case
View Patent ↗
Granted: Nov 9, 1993
Filed: Jan 22, 1992
Inventors
Hossein Sharifian
Steven R. Wilson
Assignee (at issue)
SACHEM, 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.