- 专利标题： Layered body, and saw device
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申请号： US16754811申请日： 2018-09-21
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公开(公告)号： US11750171B2公开(公告)日： 2023-09-05
- 发明人: Keiichirou Geshi , Masato Hasegawa , Shigeru Nakayama
- 申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD.
- 申请人地址： JP Osaka
- 专利权人： SUMITOMO ELECTRIC INDUSTRIES, LTD.
- 当前专利权人： SUMITOMO ELECTRIC INDUSTRIES, LTD.
- 当前专利权人地址： JP Osaka
- 代理机构： Faegre Drinker Biddle & Reath LLP
- 优先权： JP 17198778 2017.10.12
- 国际申请： PCT/JP2018/034960 2018.09.21
- 国际公布： WO2019/073781A 2019.04.18
- 进入国家日期： 2020-04-09
- 主分类号： H03H9/02
- IPC分类号： H03H9/02 ; H03H3/08 ; H03H9/25 ; H10N30/06 ; H10N30/072 ; H10N30/086
摘要：
A ceramic substrate is formed of polycrystalline ceramic and has a supporting main surface. At the supporting main surface of the ceramic substrate, the mean of grain sizes of the polycrystalline ceramic is 0.5 μm or more and less than 15 μm and the standard deviation of the grain sizes is less than 1.5 times the mean.
公开/授权文献
- US20210104999A1 LAYERED BODY, AND SAW DEVICE 公开/授权日：2021-04-08
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