Electrochromic two-core viologen derivatives and optical articles containing them
US10179768B2 · kind B2 · utility
0Cited by
9References
5Claims
0Family size
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Key dates
| Filing date | Sep 16, 2014 |
| Grant date | Jan 15, 2019 |
| Priority date | — |
| Expiry date | Sep 22, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/15165
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a group of novel electrochromic materials. More specifically, it relates to electrochromic materials having two-core viologens and the use of these two-core viologens as a variable transmittance medium for the manufacture of an optical article, such as an ophthalmic lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.