Granted Patent
Utility
US 5,344,979 · App. 08/054,733
Process for preparing color-stabilized acetaminophen
Inventors:
Edward G. Zey, George A. Blay
Patented Case
View Patent ↗
Granted: Sep 6, 1994
Filed: Apr 29, 1993
Inventors
Edward G. Zey
George A. Blay
Assignee (at issue)
Hoechst Celanese 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.