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:
Aug. 25, 1998
Filed:
Jan. 14, 1997
Applicant:
Inventors:
Phillip C Yu, Pittsburgh, PA (US);
David L Backfisch, Monroeville, PA (US);
Nada A O'Brien, Santa Rosa, CA (US);
Bryant P Hichwa, Santa Rosa, CA (US);
Assignee:
PPG Industries, Inc., Pittsburgh, PA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F / ;
U.S. Cl.
CPC ...
359273 ;
Abstract
Describes an electrochromically active iridium oxide film of iridium, oxygen and nitrogen, wherein the ratio of atomic oxygen to iridium is from 3.2:1 to 3.4:1 and the amount of nitrogen in the film is from 11 to 13 atomic percent. Describes also an electrochromic article, e.g., a plastic article such as a plastic lens, in which the aforedescribed iridium oxide film is paired with a cathodically coloring electrochromic film, such as tungsten oxide.