Granted Patent
Utility
US 4,617,151 · App. 06/712,291
2- or 2,3-substituted 5,6,11,12-tetrathiotetracene and 5,6,11,12-tetraselenotetracene
Inventors:
Carl W. Mayer, Vratislav Kvita, Josef Pfeifer
Patented Case
View Patent ↗
Granted: Oct 14, 1986
Filed: Mar 15, 1985
Inventors
Carl W. Mayer
Vratislav Kvita
Josef Pfeifer
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.