Granted Patent
Utility
US 5,639,990 · App. 08/185,897
Solid printed substrate and electronic circuit package using the same
Inventors:
Kunio Nishihara, Youichi Hosono, Kunihiro Nagamine, Takashi Kayama, Takayuki Ishikawa
Patented Case
View Patent ↗
Granted: Jun 17, 1997
Filed: Jan 26, 1994
Inventors
Kunio Nishihara
Youichi Hosono
Kunihiro Nagamine
Takashi Kayama
Takayuki Ishikawa
Assignee (at issue)
Mitsui Toatsu Chemicals, Incorporated
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.