Granted Patent
Utility
US 4,888,067 · App. 07/203,193
Process for producing flux for brazing
Inventors:
Shoichi Sato, Yasuhiro Osame, Seiji Tazaki
Patented Case
View Patent ↗
Granted: Dec 19, 1989
Filed: Jun 7, 1988
Inventors
Shoichi Sato
Yasuhiro Osame
Seiji Tazaki
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.