Granted Patent
Utility
US 5,998,907 · App. 09/087,079
Surface acoustic wave devices and their manufacturing method
Inventors:
Yutaka Taguchi, Kazuo Eda, Osamu Kawasaki, Yosihiro Tomita, Keiji Onishi, Shun-ichi Seki, Akihiko Namba, Hiroki Sato, Tetsuyosi Ogura
Patented Case
View Patent ↗
Granted: Dec 7, 1999
Filed: May 29, 1998
Inventors
Yutaka Taguchi
Kazuo Eda
Osamu Kawasaki
Yosihiro Tomita
Keiji Onishi
Shun-ichi Seki
Akihiko Namba
Hiroki Sato
Tetsuyosi Ogura
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.