Granted Patent
Utility
US 4,554,290 · App. 06/618,155
Oxamic acid derivatives
Inventors:
Manfred Boger, Jozef Drabek
Patented Case
View Patent ↗
Granted: Nov 19, 1985
Filed: Jun 7, 1984
Inventors
Manfred Boger
Jozef Drabek
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.