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:
Nov. 01, 2011
Filed:
Aug. 21, 2009
Irina G. Schwendeman, Wexford, PA (US);
James J. Finley, Pittsburgh, PA (US);
Adam D. Polcyn, Pittsburgh, PA (US);
Cheri M. Boykin, Wexford, PA (US);
Irina G. Schwendeman, Wexford, PA (US);
James J. Finley, Pittsburgh, PA (US);
Adam D. Polcyn, Pittsburgh, PA (US);
Cheri M. Boykin, Wexford, PA (US);
PPG Industries Ohio, Inc., Cleveland, OH (US);
Abstract
An electrochromic device includes a first substrate spaced from a second substrate. A first transparent conductive electrode is formed over at least a portion of the first substrate. A polymeric anode is formed over at least a portion of the first conductive electrode. A second transparent conductive electrode is formed over at least a portion of the second substrate. In one aspect of the invention, a multi-layer polymeric cathode is formed over at least a portion of the second conductive electrode. In one non-limiting embodiment, the multi-layer cathode includes a first cathodically coloring polymer formed over at least a portion of the second conductive electrode and a second cathodically coloring polymer formed over at least a portion of the first cathodically coloring polymer. An ionic liquid is positioned between the anode and the cathode.