Granted Patent
Utility
US 5,403,181 · App. 08/069,590
Method of low-NOx combustion and burner device for effecting same
Inventors:
Ryoichi Tanaka, Mamoru Matsuo, Hitoshi Yahara, Jun Sudo
Patented Case
View Patent ↗
Granted: Apr 4, 1995
Filed: Jun 1, 1993
Inventors
Ryoichi Tanaka
Mamoru Matsuo
Hitoshi Yahara
Jun Sudo
Assignee (at issue)
Nippon Furnace Kogyo Kaisha, 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.