Electrochromic element

  • US 4,135,790 A
  • Filed: 04/25/1977
  • Issued: 01/23/1979
  • Est. Priority Date: 05/14/1976
  • Status: Expired due to Term
First Claim
Patent Images

1. An electrochromic element comprising a composite cell composed of a lamination of a plurality of unit cells at least in partial registry with one another, each of said unit cells having a pair of transparent electrodes at least in partial registry with one another and an electrochromic material filling a space between said transparent electrodes, and a transparent substrate for supporting said composite cell.

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