Granted Patent
Utility
US 5,934,546 · App. 08/977,446
Process for brazing die-cast aluminum material
Inventors:
Ryotatsu Otsuka, Koji Ashida, Yuji Asano
Patented Case
View Patent ↗
Granted: Aug 10, 1999
Filed: Nov 26, 1997
Inventors
Ryotatsu Otsuka
Koji Ashida
Yuji Asano
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.