Granted Patent
Utility
US 4,801,701 · App. 06/917,112
Difluorinated (5,6,11,12-tetraselenotetracene)2 halides, the preparation thereof and the use thereof
Inventors:
Bruno Hilti, Carl W. Mayer
Patented Case
View Patent ↗
Granted: Jan 31, 1989
Filed: Oct 8, 1986
Inventors
Bruno Hilti
Carl W. Mayer
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.