Granted Patent
Utility
US 5,545,754 · App. 07/798,681
Process for the preparation of p-amino-phenols
Inventors:
Alexander Klausener, Heinz Landscheidt, Heinz U. Blank
Patented Case
View Patent ↗
Granted: Aug 13, 1996
Filed: Nov 26, 1991
Inventors
Alexander Klausener
Heinz Landscheidt
Heinz U. Blank
Assignee (at issue)
Bayer Aktiengesellschaft
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.