The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 06, 1980
Filed:
Jun. 27, 1978
Gerardo Beni, Westfield, NJ (US);
Joseph L Shay, Holmdel, NJ (US);
Bell Telephone Laboratories, Incorporated, Murray Hill, NJ (US);
Abstract
Electrochromic devices based on anodic iridium oxide as the electrochromic material have been made. These devices exhibit long term stability, memory, and good response times, e.g., less than 80 msec. for reflectivity changes of about 70% (50 msec. for 50% changes). Devices using an anodic iridium oxide film immersed in a sulfate electrolyte have been operated for more than 6.times.10.sup.5 coloration/bleaching cycles at 0.5 Hz without noticeable change in properties. Response times and stability are also improved by a heat treatment of the anodic iridium oxide at temperatures between 40 and 100 degrees C.