Granted Patent
Utility
US 5,213,784 · App. 07/900,563
Process for the production of high purity hydroxylammonium nitrate
Inventor:
David W. Cawlfield
Patented Case
View Patent ↗
Granted: May 25, 1993
Filed: Jun 18, 1992
Inventor
David W. Cawlfield
Assignee (at issue)
Olin Corporation
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.