Granted Patent
Utility
US 6,289,182 · App. 09/506,370
Method and apparatus for discriminating toner bottle types, stirring toner, and detecting the amount of remaining toner
Inventors:
Noriyuki Umezawa, Takayuki Nishi
Patented Case
View Patent ↗
Granted: Sep 11, 2001
Filed: Feb 18, 2000
Inventors
Noriyuki Umezawa
Takayuki Nishi
Assignee (at issue)
TOSHIBA TEC 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.