Granted Patent
Utility
US 6,677,237 · App. 10/166,703
Semiconductor chip, semiconductor device, circuit board and electronic equipment and production methods for them
Inventors:
Kazushige Umetsu, Jun Amako, Shinichi Yotsuya, Katsuji Arakawa
Patented Case
View Patent ↗
Granted: Jan 13, 2004
Filed: Jun 12, 2002
Inventors
Kazushige Umetsu
Jun Amako
Shinichi Yotsuya
Katsuji Arakawa
Assignee (at issue)
SEIKO EPSON 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.