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:
Apr. 29, 2014
Filed:
Jan. 26, 2012
Toshiaki Takahashi, Shunan, JP;
Junji Takenaka, Shunan, JP;
Junji Momoda, Shunan, JP;
Kazuhiro Teranishi, Shunan, JP;
Mitsuyoshi Sando, Shunan, JP;
Shinobu Izumi, Shunan, JP;
Toshiaki Takahashi, Shunan, JP;
Junji Takenaka, Shunan, JP;
Junji Momoda, Shunan, JP;
Kazuhiro Teranishi, Shunan, JP;
Mitsuyoshi Sando, Shunan, JP;
Shinobu Izumi, Shunan, JP;
Tokuyama Corporation, Shunan-Shi, JP;
Abstract
The chromene compound is represented by the following formula (I), wherein Rat the 11-position is a sulfur-containing substituent selected from the group consisting of thiol group, alkylthio group, alkoxyalkylthio group, haloalkylthio group, cycloalkylthio group, arylthio group, heteroarylthio group, sulfonyl group and sulfinyl group, Rand Rat the 6-position and the 7-position are a combination of an aryl group or a heteroaryl group and an electron donating group having a Hammett constant σof −0.1 or less, or Rand/or Ris sulfur-containing substituent selected from thiol group, alkylthio group, alkoxyalkylthio group, haloalkylthio group, cycloalkylthio group, arylthio group and heteroarylthio group.