David L. Poll, Thomas F. Guarr, and William L. Tonar, all from Holland, Mich., Kevin L. Ash of Grand Rapids, Mich., and David A. Theiste of Byron Center, Mich., were issued U.S. Patent No. 7,525,714 o…
David L. Poll, Thomas F. Guarr, and William L. Tonar, all from Holland, Mich., Kevin L. Ash of Grand Rapids, Mich., and David A. Theiste of Byron Center, Mich., were issued U.S. Patent No. 7,525,714 on 28 April 2009 for their development of an electrochromic window assembly, assigned to Gentex Corp., Holland. According to the abstract released by the U.S. Patent & Trademark Office: An electrochromic window assembly is disclosed that includes a first substrate and a second substrate that is maintained in a parallel and spaced relation from the first substrate by means of a window frame and spacer. The window assembly further includes an electrochromic device mounted within the airtight chamber formed between the first and second substrates. Electrochromic device may be mounted so as to provide an air chamber between first substrate, which is the external substrate, and electrochromic device. At least one of the chambers formed between substrates and electrochromic device may be filled with an insulating gas such as argon. Also disclosed are novel methods for manufacture of an electrochromic device for incorporation into such a window assembly. A novel electrochromic device is also disclosed having electrical bus clips secured about the entire periphery of the electrochromic device.