Granted Patent
Utility
US 5,223,624 · App. 07/748,473
Modified gamma-quinacridone pigment
Inventors:
Fridolin Babler, Edward E. Jaffe
Patented Case
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Granted: Jun 29, 1993
Filed: Aug 22, 1991
Inventors
Fridolin Babler
Edward E. Jaffe
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.