Granted Patent
Utility
US 6,797,539 · App. 10/439,110
Method of manufacturing a semiconductor device
Inventors:
Tsutomu Wada, Masachika Masuda
Patented Case
View Patent ↗
Granted: Sep 28, 2004
Filed: May 16, 2003
Inventors
Tsutomu Wada
Masachika Masuda
Assignees (at issue)
HITACHI, LTD.
Hitachi Ulsi Systems Co., 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.