Granted Patent
Utility
US 5,264,313 · App. 07/630,339
Charge director composition
Inventors:
Benzion Landa, Yaacov Almog
Patented Case
View Patent ↗
Granted: Nov 23, 1993
Filed: Dec 17, 1990
Inventors
Benzion Landa
Yaacov Almog
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.