Granted Patent
Utility
US 5,478,607 · App. 07/880,198
Method for use of preflux, printed wiring board, and method for production thereof
Inventors:
Hiroshi Gunji, Kenichi Yamaguchi, Daikichi Tachibana
Patented Case
View Patent ↗
Granted: Dec 26, 1995
Filed: May 8, 1992
Inventors
Hiroshi Gunji
Kenichi Yamaguchi
Daikichi Tachibana
Assignees (at issue)
Hitachi Telecom Technologies, Ltd
Sanwa Laboratory 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.