Granted Patent
Utility
US 6,717,019 · App. 10/060,679
Glycidyl ether-capped acetylenic diol ethoxylate surfactants
Inventor:
Kevin Rodney Lassila
Patented Case
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Granted: Apr 6, 2004
Filed: Jan 30, 2002
Inventor
Kevin Rodney Lassila
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.