Granted Patent
Utility
US 6,638,485 · App. 09/022,817
Process for treating exhaust gas and exhaust gas treating equipment
Inventors:
Kozo Iida, Toru Takashina, Shintaro Honjo
Patented Case
View Patent ↗
Granted: Oct 28, 2003
Filed: Feb 12, 1998
Inventors
Kozo Iida
Toru Takashina
Shintaro Honjo
Assignee (at issue)
MITSUBISHI ELECTRIC CORPORATION
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.