Electrochromic compound, electrochromic composition, electrochromic element, and electrochromic dimming element
US10988684B2 · kind B2 · utility
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12Claims
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Key dates
| Filing date | Feb 9, 2016 |
| Grant date | Apr 27, 2021 |
| Priority date | — |
| Expiry date | Apr 21, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2001/164
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
To provide an electrochromic compound represented by the following general formula (1) where X1 and X2 are each independently a carbon atom or a nitrogen atom, R1, R2 and R3 are each independently a halogen atom, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted alkoxy group, x is an integer selected from 0 through 3, y and z are each independently an integer selected from 0 through 4, and at least one of L1 and L2 is a monovalent functional group bonded to a nitrogen atom of a pyridinium ring directly, or via a divalent substituent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.