Granted Patent
Utility
US 6,446,673 · App. 10/040,496
Fuel hose of low fuel permeability
Inventors:
Shinji Iio, Hiroaki Ito, Yoshimitsu Ishida, Katsutoshi Mizuno, Tomohide Ito
Patented Case
View Patent ↗
Granted: Sep 10, 2002
Filed: Jan 9, 2002
Inventors
Shinji Iio
Hiroaki Ito
Yoshimitsu Ishida
Katsutoshi Mizuno
Tomohide Ito
Assignee (at issue)
TOKAI RUBBER INDUSTRIES, LTD.
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.