Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2006-01-25
2009-12-01
Benson, Walter (Department: 2837)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
C310S321000
Reexamination Certificate
active
07626317
ABSTRACT:
A piezoelectric oscillation element (1) comprising a piezoelectric substrate (10), a first conductor film (21) formed on one main surface of the piezoelectric substrate (10), a second conductor film (22) formed on the other main surface, and grounding terminals (31a, 31b) formed on the side surfaces of the piezoelectric substrate (10). Specified capacitances are respectively formed between the first and second conductor films (21, 22) formed on the main surfaces of the piezoelectric substrate (10) and the grounding terminals (31a, 31b) formed on the side surfaces thereof. Larger capacitances can be formed than when electrodes are disposed on the same main surface in proximity of each other to form a capacitance, whereby no adverse effect is given to thickness vibration occurring between the first and second conductor films (21, 22).
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Nakai Yasuhiro
Yamakawa Kenji
Addison Karen B
Benson Walter
Hogan & Hartson LLP
Kyocera Corporation
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