Granted Patent
Utility
US 5,422,042 · App. 08/154,764
Imidazolidone polyetheramine strength enhancing additives of epoxy resin systems
Patented Case
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Granted: Jun 6, 1995
Filed: Nov 19, 1993
Assignee (at issue)
HUNTSMAN 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.