Granted Patent
Utility
US 5,241,189 · App. 07/891,332
Ink concentration sensor for maintaining dye concentration in an ink jet printer
Inventors:
Randy D. Vandagriff, Robert J. Simon, Randal L. Mullins, Russell L. Bartley
Patented Case
View Patent ↗
Granted: Aug 31, 1993
Filed: May 29, 1992
Inventors
Randy D. Vandagriff
Robert J. Simon
Randal L. Mullins
Russell L. Bartley
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.