Granted Patent
Utility
US 6,351,716 · App. 09/168,717
Method and device for determining the quantity of product contained in a reservoir, for example in an ink reservoir for a printer
Inventors:
Marie-Helene Froger, Pascal Coudray, Mickaël Lorgeoux
Patented Case
View Patent ↗
Granted: Feb 26, 2002
Filed: Oct 9, 1998
Inventors
Marie-Helene Froger
Pascal Coudray
Mickaël Lorgeoux
Assignee (at issue)
CANON KABUSHIKI KAISHA
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.