Granted Patent
Utility
US 6,764,670 · App. 10/016,034
Removal of thiothionylfluoride from sulfur tetrafluoride
Inventor:
Philip Bruce Henderson
Patented Case
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Granted: Jul 20, 2004
Filed: Nov 1, 2001
Inventor
Philip Bruce Henderson
Assignee (at issue)
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.