Crystal element and crystal device

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United States of America Patent

PATENT NO 8907545
SERIAL NO

13597261

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Abstract

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A mesa-structure crystal element includes a circumferential portion having a thin thickness, a first convex portion formed on a plane in a center side from the circumferential portion and having a first height from the circumferential portion in a first principal face and a first planar shape, and a second convex portion formed in a center side from the circumferential portion and having a second height from the circumferential portion in a second principal face opposite to the first principal face and a second planar shape, wherein at least one of an area and a planar shape is different between the first planar shape of the first convex portion and the second planar shape of the second convex portion, or the first height of the first convex portion is different from the second height of the second convex portion.

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Patent Owner(s)

  • NIHON DEMPA KOGYO CO., LTD.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Mizusawa, Shuichi Saitama, JP 42 177
Takahashi, Takehiro Saitama, JP 130 657

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