Thickness mode transducers and related devices and methods
US10632499B2 · kind B2 · utility
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17Claims
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Key dates
| Filing date | Dec 9, 2016 |
| Grant date | Apr 28, 2020 |
| Priority date | — |
| Expiry date | Aug 18, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/057
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Transducers are provided including a piezoelectric block having first and second opposing surfaces; a first non-piezoelectric layer on the first surface of the piezoelectric block, the first layer including a low density material having a first thickness; and a second non-piezoelectric layer on the second surface of the piezoelectric block, the second layer including a high density material having a second thickness, the second thickness being different from the first thickness and being at least two times the first thickness. Related devices and methods are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.