Granted Patent
Utility
US 5,453,542 · App. 08/201,297
Preparation of 4,6-diaminoresorcinol through a bisazoarylresorcinol intermediate
Inventors:
Ted A. Morgan, Bassam S. Nader, Paul C. Vosejpka, Weshi Wu, Andrew S. Kende
Patented Case
View Patent ↗
Granted: Sep 26, 1995
Filed: Feb 24, 1994
Inventors
Ted A. Morgan
Bassam S. Nader
Paul C. Vosejpka
Weshi Wu
Andrew S. Kende
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.