Granted Patent
Utility
US 6,712,262 · App. 10/197,764
Water-soluble preflux, printed circuit board, and process for treating the surface of a metal in a printed circuit board
Inventors:
Shinichi Akaike, Kazutaka Nakanami, Yoshiyuki Takahashi, Takao Ono
Patented Case
View Patent ↗
Granted: Mar 30, 2004
Filed: Jul 18, 2002
Inventors
Shinichi Akaike
Kazutaka Nakanami
Yoshiyuki Takahashi
Takao Ono
Assignee (at issue)
TAMURA KAKEN CORPORATION
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.