Granted Patent
Utility
US 4,515,798 · App. 06/507,257
Benzoylparabanic acids
Inventors:
Manfred Boger, Jozef Drabek
Patented Case
View Patent ↗
Granted: May 7, 1985
Filed: Jun 23, 1983
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.