Granted Patent
Utility
US 6,508,998 · App. 08/741,868
Temperature moderation of an oxygen enriched claus sulfur plant using an ejector
Inventor:
Elmo Nasato
Patented Case
View Patent ↗
Granted: Jan 21, 2003
Filed: Oct 28, 1996
Inventor
Elmo Nasato
Assignees (at issue)
GAA Engineered Systems, Inc.
Air Products and Chemicals, 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.