Granted Patent
Utility
US 6,473,577 · App. 09/696,308
Process cartridge remanufacturing method
Inventors:
Akira Higeta, Yoshiyuki Kakumi
Patented Case
View Patent ↗
Granted: Oct 29, 2002
Filed: Oct 26, 2000
Inventors
Akira Higeta
Yoshiyuki Kakumi
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.