Granted Patent
Utility
US 4,544,728 · App. 06/664,795
Storage-stable thermosetting compositions comprising imido prepolymers
Inventors:
Rene Dien, Guy Poulain
Patented Case
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Granted: Oct 1, 1985
Filed: Oct 25, 1984
Inventors
Rene Dien
Guy Poulain
Assignee (at issue)
Rhone-Poulenc Specialities Chimiques
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.