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. 08, 2016
Filed:
Jun. 19, 2012
Applicants:
Shinobu Izumi, Shunan, JP;
Kazuhiro Teranishi, Shunan, JP;
Yusuke Daikoku, Shunan, JP;
Mitsuyoshi Sando, Shunan, JP;
Inventors:
Shinobu Izumi, Shunan, JP;
Kazuhiro Teranishi, Shunan, JP;
Yusuke Daikoku, Shunan, JP;
Mitsuyoshi Sando, Shunan, JP;
Assignee:
TOKUYAMA CORPORATION, Shunan-Shi, Yamaguchi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 21/22 (2006.01); C09K 9/02 (2006.01); C07C 39/17 (2006.01); C07C 43/23 (2006.01); G02B 5/23 (2006.01); C07C 323/21 (2006.01); C07C 39/23 (2006.01); C07D 311/92 (2006.01); C07D 327/04 (2006.01); C07D 497/10 (2006.01); C07D 295/096 (2006.01); C08L 83/04 (2006.01);
U.S. Cl.
CPC ...
C09K 9/02 (2013.01); C07C 39/17 (2013.01); C07C 39/23 (2013.01); C07C 43/23 (2013.01); C07C 323/21 (2013.01); C07D 295/096 (2013.01); C07D 311/92 (2013.01); C07D 327/04 (2013.01); C07D 497/10 (2013.01); G02B 5/23 (2013.01); C07C 2101/04 (2013.01); C07C 2101/08 (2013.01); C07C 2101/14 (2013.01); C07C 2101/16 (2013.01); C07C 2103/94 (2013.01); C08L 83/04 (2013.01); C09K 2211/1007 (2013.01); C09K 2211/1011 (2013.01); C09K 2211/1088 (2013.01); Y10T 428/31504 (2015.04);
Abstract
A chromene compound having a short fading half period, especially, a short fading half period even at a low temperature in a general-purpose polymer solid matrix. The chromene compound is represented by the following formula (1). wherein Rand Rare each a cycloalkyl group or the like.