Granted Patent
Utility
US 5,821,665 · App. 08/646,716
Surface acoustic wave device and method of manufacture
Inventors:
Keiji Onishi, Shun-ichi Seki, Yutaka Taguchi, Kazuo Eda
Patented Case
View Patent ↗
Granted: Oct 13, 1998
Filed: May 8, 1996
Inventors
Keiji Onishi
Shun-ichi Seki
Yutaka Taguchi
Kazuo Eda
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.