Granted Patent
Utility
US 4,330,644 · App. 06/250,980
Curable tris(hydroxyalkyl) aminomethane-modified epoxy resin composition
Inventor:
Roy A. Allen
Patented Case
View Patent ↗
Granted: May 18, 1982
Filed: Apr 3, 1981
Inventor
Roy A. Allen
Assignee (at issue)
SHELL OIL COMPANY
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.