Nova Patents
EP0303586A2

Electrically heated laminated window.

Abstract

A transparent, laminated window, particularly for use as a vehicle windshield, has improved deicing capability and high luminous transmission and near IR rejection, comprises an optical element having a low sheet resistivity of less than about 3 ohms per square, such element containing at least two transparent metal layers electrically conductively associated with bus bar(s) and separated by one or more dielectric layers.

Term

Term ended

Projected expiry passed 10 August 2008, 18.1 years ago.

  1. Priority
  2. Filed
  3. Published
  4. Projected expiry
  5. Today

11 claims: 3 independent, 8 dependent

  1. 1
    A transparent, laminated window having improved defrosting capability comprising, in combination,:A) an optical element having a sheet resistivity of less than about 3 ohms per square containing: i) at least two electrically con­ductive metal layers;ii) one or more dielectric spacing layers separating said conductive layers;and iii) a transparent substrate;and B) a bus bar electrically conductively associated with each conductive layer.
  2. 4
    The window of any of claims 1, 2 or 3 wherein the optical element has a sheet resistivity of less than 2.5 ohms per square.
  3. 11
    A transparent, laminated window capable of transmitting at least 70% of visible light, rejecting at least 50% of solar radiation and having improved defrosting capability, said window comprising:A) an optical element having a sheet resistivity less than 3 ohms per square containing: i) at least two electrically con­ductive metal layers;ii) one or more dielectric spacing layers separating said conductive layers;and iii) a transparent substrate;and B) a bus bar electrically conductively associated with each conductive layer.
Independent claims3