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:
Jan. 17, 2023
Filed:
Oct. 18, 2018
Canon Kabushiki Kaisha, Tokyo, JP;
Yosuke Nishide, Kawasaki, JP;
Naoki Yamada, Inagi, JP;
Hiroki Ohrui, Kawasaki, JP;
Hironobu Iwawaki, Yokohama, JP;
Hirokazu Miyashita, Ebina, JP;
Jun Kamatani, Tokyo, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
An organic compound represented by the following general formula [1] is excellent in thermal stability. In the general formula [1], Rto Rare each independently selected from the group consisting of a hydrogen atom and a substituent. Symbol A is selected from the group consisting of a divalent residue of naphthalene, phenanthrene, fluorene, benzofluorene, dibenzofluorene or spirofluorene, and a heteroarylene group having 4 to 12 carbon atoms. Symbol B is selected from the group consisting of an arylene group having 6 to 25 carbon atoms and a heteroarylene group having 4 to 12 carbon atoms. Symbol n is an integer of 0 to 3.