Variable light transmission device containing ferrous ammonium sulfate as an auxiliary redox system
US3930717A · kind A · utility
5Cited by
2References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 15, 1974 |
| Grant date | Jan 6, 1976 |
| Priority date | — |
| Expiry date | Mar 15, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/1503
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A device for the control of light transmission or reflection comprises one or more working electrodes, preferably arranged to form a display and having radiation transmission or reflection properties, an active material comprising an N(p-cyanophenyl) substituted derivative of a compound, usually bicyclic, having two conjugated nitrogen-containing rings in contact with the working electrode surface, a counter electrode, also in contact with the active material and ferrous ammonium sulphate as an auxiliary redox system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.