Granted Patent
Utility
US 5,008,379 · App. 07/114,901
Chromium complexes of sulfo group containing disazo compounds having a resorcinol biscoupling component radical
Inventor:
Herbert Holliger
Patented Case
View Patent ↗
Granted: Apr 16, 1991
Filed: Oct 29, 1987
Inventor
Herbert Holliger
Assignee (at issue)
Sandoz AG
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.