Granted Patent
Utility
US 4,680,341 · App. 06/853,052
Epoxy resins based on tetraglycidyl diamines
Inventor:
Richard H. Newman-Evans
Patented Case
View Patent ↗
Granted: Jul 14, 1987
Filed: Apr 17, 1986
Inventor
Richard H. Newman-Evans
Assignee (at issue)
Union Carbide 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.