Granted Patent
Utility
US 6,086,840 · App. 09/200,150
Process for making ammonia from heterogeneous feedstock
Inventors:
John P. Whitney, Ashok D. Rao
Patented Case
View Patent ↗
Granted: Jul 11, 2000
Filed: Nov 25, 1998
Inventors
John P. Whitney
Ashok D. Rao
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.