Granted Patent
Utility
US 4,789,614 · App. 07/134,400
Toners and developers containing benzyldimethylalkylammonium charge-control agents
Inventors:
Douglas E. Bugner, Peter S. Alexandrovich
Patented Case
View Patent ↗
Granted: Dec 6, 1988
Filed: Dec 17, 1987
Inventors
Douglas E. Bugner
Peter S. Alexandrovich
Assignee (at issue)
EASTMAN KODAK COMPANY
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.