Granted Patent
Utility
US 4,364,949 · App. 06/214,825
Hydroxyphenyl ketones
Inventors:
Rene Muntwyler, Raphael Menasse
Patented Case
View Patent ↗
Granted: Dec 21, 1982
Filed: Dec 10, 1980
Inventors
Rene Muntwyler
Raphael Menasse
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.