Granted Patent
Utility
US 4,033,909 · App. 05/595,744
Stable phenolic resoles
Inventor:
Anthony J. Papa
Patented Case
View Patent ↗
Granted: Jul 5, 1977
Filed: Jul 14, 1975
Inventor
Anthony J. Papa
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.