Granted Patent
Utility
US 6,451,633 · App. 09/444,432
Method for manufacturing semiconductor integrated circuit
Inventor:
Yoshifumi Yoshida
Patented Case
View Patent ↗
Granted: Sep 17, 2002
Filed: Nov 19, 1999
Inventor
Yoshifumi Yoshida
Assignee (at issue)
SEIKO INSTRUMENTS 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.