Crystal unit

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United States of America Patent

PATENT NO 9921257
SERIAL NO

14974434

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Abstract

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A crystal unit includes: a crystal blank; an excitation electrode formed on the crystal blank and excites a main vibration of the crystal blank; a housing that accommodates the crystal blank; and a sub-vibration electrode formed on the housing and excites a sub-vibration of the crystal blank.

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Patent Owner(s)

Patent OwnerAddress
FUJITSU LIMITED1-1 KAMIKODANAKA 4-CHOME NAKAHARA-KU KAWASAKI-SHI KANAGAWA 211-8588

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Itoh, Masayuki Kawasaki, JP 108 450
Kishi, Masakazu Kawasaki, JP 44 136
Kubota, Hajime Kawasaki, JP 60 290

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