Granted Patent
Utility
US 4,978,809 · App. 07/434,150
Meta-halogenated dibenzylphenols
Inventor:
Abel Mendoza
Patented Case
View Patent ↗
Granted: Dec 18, 1990
Filed: Nov 13, 1989
Inventor
Abel Mendoza
Assignee (at issue)
THE DOW CHEMICAL 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.