Granted Patent
Utility
US 6,181,633 · App. 09/433,684
Semiconductor device
Inventors:
Kazuhiko Shimakawa, Yuji Yamasaki
Patented Case
View Patent ↗
Granted: Jan 30, 2001
Filed: Nov 4, 1999
Inventors
Kazuhiko Shimakawa
Yuji Yamasaki
Assignee (at issue)
SUMITOMO ELECTRIC INDUSTRIES, 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.