Granted Patent
Utility
US 6,828,221 · App. 10/139,237
Manufacturing method for wiring circuit substrates
Inventors:
Tomoo Iijima, Masayuki Ohsawa
Patented Case
View Patent ↗
Granted: Dec 7, 2004
Filed: May 7, 2002
Inventors
Tomoo Iijima
Masayuki Ohsawa
Assignee (at issue)
NORTH INC.
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.