Granted Patent
Utility
US 6,186,080 · App. 08/965,530
Recovery boiler
Inventors:
Hirokazu Hino, Toshimitsu Ichinose, Kimishiro Tokuda, Yoshihisa Arakawa, Masaaki Nagai, Yoshitaka Baba
Patented Case
View Patent ↗
Granted: Feb 13, 2001
Filed: Nov 6, 1997
Inventors
Hirokazu Hino
Toshimitsu Ichinose
Kimishiro Tokuda
Yoshihisa Arakawa
Masaaki Nagai
Yoshitaka Baba
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.