Granted Patent
Utility
US 6,236,141 · App. 09/459,107
Surface acoustic wave element
Inventors:
Hiroki Sato, Keiji Onishi, Akihiko Namba, Yutaka Taguchi, Yosihiro Tomita
Patented Case
View Patent ↗
Granted: May 22, 2001
Filed: Dec 13, 1999
Inventors
Hiroki Sato
Keiji Onishi
Akihiko Namba
Yutaka Taguchi
Yosihiro Tomita
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.