Granted Patent
Utility
US 5,084,573 · App. 07/552,624
2,9-dichloroquinacridone in platelet form
Inventors:
Fridolin Babler, Edward E. Jaffe
Patented Case
View Patent ↗
Granted: Jan 28, 1992
Filed: Jul 13, 1990
Inventors
Fridolin Babler
Edward E. Jaffe
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.