Granted Patent
Utility
US 4,393,007 · App. 06/115,815
Process for the manufacture of anthraquinone compounds
Inventors:
Martin Priester, Peter Loew
Patented Case
View Patent ↗
Granted: Jul 12, 1983
Filed: Jan 28, 1980
Inventors
Martin Priester
Peter Loew
Assignee (at issue)
Ciba-Geigy
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.