Gradient permittivity film
US11637367B2 · kind B2 · utility
1Cited by
7References
46Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 5, 2019 |
| Grant date | Apr 25, 2023 |
| Priority date | — |
| Expiry date | Jan 31, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q1/421
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A gradient permittivity film comprises (a) a first permittivity layer comprising a first continuous matrix of a first material having a first relative permittivity (εr1) and a second component having a second relative permittivity (εr2) dispersed in the first continuous matrix, the first permittivity layer having a first effective layer relative permittivity (ε1) and a thickness (T1); and (b) a second permittivity layer having a second effective layer relative permittivity (ε2) and a thickness (T2) disposed on the first permittivity layer T1=0.8(t1) to 1.2(t1), where t1=(I); T2=0.8(t2) to 1.2 (T2), where T2=(II).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.