Granted Patent
Utility
US 6,790,264 · App. 10/130,333
Control of ammonia emission from ammonia laden fly ash in concrete
Inventor:
Rafic Y. Minkara
Patented Case
View Patent ↗
Granted: Sep 14, 2004
Filed: Sep 23, 2002
Inventor
Rafic Y. Minkara
Assignee (at issue)
ISG Resources, 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.