Invention Grant
- Patent Title: At-cut crystal element, crystal resonator and crystal unit
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Application No.: US15086064Application Date: 2016-03-31
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Publication No.: US10659005B2Publication Date: 2020-05-19
- Inventor: Takayuki Kuwahara , Kenji Shimao , Hirokazu Iwata
- Applicant: NIHON DEMPA KOGYO CO., LTD.
- Applicant Address: JP Tokyo
- Assignee: NIHON DEMPA KOGYO CO., LTD.
- Current Assignee: NIHON DEMPA KOGYO CO., LTD.
- Current Assignee Address: JP Tokyo
- Agency: JCIPRNET
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@324afa67
- Main IPC: H03H9/19
- IPC: H03H9/19 ; H03H3/02 ; H03H9/02
Abstract:
An AT-cut crystal element is provided. The AT-cut crystal element includes side surfaces intersecting with a Z′-axis of a crystallographic axis of a crystal. At least one side surface of the side surfaces is constituted of three surfaces of a first surface to a third surface. Besides, a crystal resonator including the AT-cut crystal element, and a crystal unit including the crystal resonator are provided.
Public/Granted literature
- US20160294356A1 AT-CUT CRYSTAL ELEMENT, CRYSTAL RESONATOR AND CRYSTAL UNIT Public/Granted day:2016-10-06
Information query
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