Granted Patent
Utility
US 5,414,130 · App. 08/173,547
Process for the preparation of diaminoresorcinol
Inventors:
Zenon Lysenko, Richard G. Pews, Paul C. Vosejpka
Patented Case
View Patent ↗
Granted: May 9, 1995
Filed: Dec 23, 1993
Inventors
Zenon Lysenko
Richard G. Pews
Paul C. Vosejpka
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.