Granted Patent
Utility
US 6,800,259 · App. 10/091,377
Methods to control H2S and arsine emissions
Inventor:
Robert A. Hard
Patented Case
View Patent ↗
Granted: Oct 5, 2004
Filed: Mar 4, 2002
Inventor
Robert A. Hard
Assignee (at issue)
Cabot 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.