Granted Patent
Utility
US 5,192,638 · App. 07/756,641
Toner for use in compositions for developing latent electrostatic images, method of making the same, and liquid composition using the improved toner
Inventors:
Benzion Landa, Peretz Ben-Auraham, Joseph Hall, George A. Gibson
Patented Case
View Patent ↗
Granted: Mar 9, 1993
Filed: Sep 9, 1991
Inventors
Benzion Landa
Peretz Ben-Auraham
Joseph Hall
George A. Gibson
Assignee (at issue)
Spectrum Sciences B.V.
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.