Granted Patent
Utility
US 5,045,425 · App. 07/398,460
Electrophotographic liquid developer composition and novel charge directors for use therein
Inventor:
Ronald Swidler
Patented Case
View Patent ↗
Granted: Sep 3, 1991
Filed: Aug 25, 1989
Inventor
Ronald Swidler
Assignee (at issue)
Commtech International Management Corporation
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.