Granted Patent
Utility
US 5,240,524 · App. 07/876,320
Ammonium nitrate density modification
Inventor:
Arun Chattopadhyay
Patented Case
View Patent ↗
Granted: Aug 31, 1993
Filed: Apr 30, 1992
Inventor
Arun Chattopadhyay
Assignee (at issue)
ICI Canada, 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.