Electromagnetic-wave-absorbing particles, electromagnetic-wave-absorbing particle dispersion liquids, and manufacturing methods of electromagnetic-wave-absorbing particles
US11369048B2 · kind B2 · utility
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16Claims
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Key dates
| Filing date | Jul 25, 2018 |
| Grant date | Jun 21, 2022 |
| Priority date | — |
| Expiry date | Apr 12, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2666/72
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Electromagnetic wave absorbing particles are provided that include hexagonal tungsten bronze having oxygen deficiency, wherein the tungsten bronze is expressed by a general formula: MxWO3-y(where one or more elements M include at least one or more species selected from among K, Rb, and Cs, 0.15≤x≤0.33, and 0<y≤0.46), and wherein oxygen vacancy concentration Nv in the electromagnetic wave absorbing particles is greater than or equal to 3×1014 cm−3 and less than or equal to 8.0×1021 cm−3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.