Patent · US Expired

Electrochromic system

US6277307A · kind A · utility

14Cited by

13References

14Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Horst Berneth · Leverkusen, DE
Uwe Claussen · Leverkusen, DE

Key dates

Filing date	Aug 3, 1998
Grant date	Aug 21, 2001
Priority date	—
Expiry date	Aug 3, 2018

Classification

Technology area (CPC G)Physics
CPC primaryG02F2001/15145
WIPO fieldOptics
WIPO sectorInstruments

Abstract

In the novel electrochromic system comprising at least one oxidizable substance RED.sub.1 and at least one reducible substance OX.sub.2, each of which, accompanied by an increase in the absorbance in the visible region of the spectrum, is converted from a weakly colored or colorless form into a colored form wherein the reciprocal conversion of oxidized and reducible form takes place by a .sigma. bond being broken or formed, respectively.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.