Electrically controllable device having variable optical and/or energy properties
US7002720B2 · kind B2 · utility
120Cited by
8References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 10, 2002 |
| Grant date | Feb 21, 2006 |
| Priority date | — |
| Expiry date | Jul 10, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2323/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The subject of the invention is an electrically controllable device having variable optical and/or energy properties of the electrochromic type, which comprises a functional film consisting of a layer or a stack of layers which is placed between two external substrates which meet the following criteria: at least one is essentially transparent; at least one is based on one (or more) film(s) based on one or more polymers; each of them is a water vapor barrier, with a water vapor permeability of at most 1 g/m2/24 h, especially at most 0.1 g/m2/24 h.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.