Granted Patent
Utility
US 5,920,143 · App. 08/893,091
Surface acoustic wave device
Inventors:
Hisaki Tarui, Keiichi Kuramoto, Hitoshi Hirano, Yoichi Domoto
Patented Case
View Patent ↗
Granted: Jul 6, 1999
Filed: Jul 15, 1997
Inventors
Hisaki Tarui
Keiichi Kuramoto
Hitoshi Hirano
Yoichi Domoto
Assignee (at issue)
SANYO ELECTRIC 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.