Granted Patent
Utility
US 5,502,196 · App. 08/404,012
Pyrrolo 3,4-c!pyrroles containing amine oxide groups
Inventors:
Zhimin Hao, Abul Iqbal, Rudolf Kirchmayr
Patented Case
View Patent ↗
Granted: Mar 26, 1996
Filed: Mar 14, 1995
Inventors
Zhimin Hao
Abul Iqbal
Rudolf Kirchmayr
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.