Granted Patent
Utility
US 5,667,551 · App. 08/615,952
Secondary air humidity controller for a glass melting furnace and glass melting furnace with the controller
Inventors:
Hiroshi Todoriki, Ichiro Terao
Patented Case
View Patent ↗
Granted: Sep 16, 1997
Filed: Mar 14, 1996
Inventors
Hiroshi Todoriki
Ichiro Terao
Assignee (at issue)
ASAHI GLASS CO., 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.