Granted Patent
Utility
US 5,330,090 · App. 07/994,556
Brazing agent and a brazing sheet both comprising an aluminum alloy containing a flux
Inventor:
Ichiro Iwai
Patented Case
View Patent ↗
Granted: Jul 19, 1994
Filed: Dec 21, 1992
Inventor
Ichiro Iwai
Assignee (at issue)
Showa Aluminum Corp.
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.