Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2007-06-05
2008-12-16
Dougherty, Thomas M (Department: 2834)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
C310S340000, C310S346000, C333S193000
Reexamination Certificate
active
07466061
ABSTRACT:
An acoustic boundary wave device includes a first medium having piezoelectricity, electrodes that are provided on the first medium and excite acoustic waves, a second medium made of a material different from the first medium and provided on the first medium so as to cover the electrodes, and a third medium that has a heat conductivity higher than that of the second medium and is provided so as to contact an upper surface of the second medium and at least a part of side surfaces of the second medium.
REFERENCES:
patent: 2006/0138902 (2006-06-01), Kando
patent: 2008/0067896 (2008-03-01), Inoue et al.
patent: 2003-209458 (2003-07-01), None
patent: WO 98/52279 (1998-11-01), None
Yamaguchi, et al.; “Highly Piezoelectric Boundary Waves in Si/SiO2/LiNbO3Structure”; 1998 IEEE International Frequency Control Symposium, pp. 484-488.
Matsuda Satoru
Matsuda Takashi
Mitobe Seiichi
Miura Michio
Ueda Masanori
Arent & Fox LLP
Dougherty Thomas M
Fujitsu Limited
Fujitsu Media Devices Limited
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