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. 30, 2017
Filed:
Nov. 01, 2012
Applicant:
National Institute of Advanced Industrial Science and Technology, Tokyo, JP;
Inventor:
Morito Akiyama, Saga, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03C 4/02 (2006.01); C03C 14/00 (2006.01); G03C 1/725 (2006.01); C09K 11/60 (2006.01); C09K 11/62 (2006.01); C09K 11/64 (2006.01); C09K 11/66 (2006.01); C09K 11/67 (2006.01); C09K 11/68 (2006.01); C09K 11/69 (2006.01); C09K 11/70 (2006.01); C09K 11/74 (2006.01); C09K 11/75 (2006.01); C09K 11/77 (2006.01);
U.S. Cl.
CPC ...
C03C 14/008 (2013.01); C03C 4/02 (2013.01); C09K 11/602 (2013.01); C09K 11/625 (2013.01); C09K 11/646 (2013.01); C09K 11/666 (2013.01); C09K 11/676 (2013.01); C09K 11/685 (2013.01); C09K 11/698 (2013.01); C09K 11/706 (2013.01); C09K 11/7442 (2013.01); C09K 11/757 (2013.01); C09K 11/7734 (2013.01); C09K 11/7774 (2013.01); G03C 1/725 (2013.01); C03C 2204/00 (2013.01); C03C 2214/08 (2013.01); C03C 2214/17 (2013.01);
Abstract
Provided is a photochromic substance that has lower toxicity, exhibits good sensitivity in a visible light region, changes color deeply, has slow speed of color fading, has chemical and thermal stability, and has good durability. The photochromic substance has a composition represented by the formula:BaCaMgSiO:FeMM'