Electrochromic composition
US9785030B2 · kind B2 · utility
4Cited by
14References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 16, 2014 |
| Grant date | Oct 10, 2017 |
| Priority date | — |
| Expiry date | Sep 16, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C7/10
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention relates to an electrochromic composition comprising at least one reducing compound and at least two oxidizing compounds, said at least two oxidizing compounds having similar oxydo-reduction potentials. More specifically, said at least two oxidizing compounds are selected from viologen derivatives. Said composition can be used 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.