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:
Oct. 29, 2013
Filed:
Jul. 04, 2008
Masahiro Kawamura, Sodegaura, JP;
Kazuki Nishimura, Sodegaura, JP;
Yoriyuki Takashima, Sodegaura, JP;
Mitsunori Ito, Sodegaura, JP;
Toshihiro Iwakuma, Sodegaura, JP;
Toshinari Ogiwara, Sodegaura, JP;
Masahiro Kawamura, Sodegaura, JP;
Kazuki Nishimura, Sodegaura, JP;
Yoriyuki Takashima, Sodegaura, JP;
Mitsunori Ito, Sodegaura, JP;
Toshihiro Iwakuma, Sodegaura, JP;
Toshinari Ogiwara, Sodegaura, JP;
Idemitsu Kosan Co., Ltd., Tokyo, JP;
Abstract
A phenanthrene derivative is represented by a formula (1) below. In the formula (1), Arto Areach represent an aromatic hydrocarbon ring group having 6 to 18 carbon atoms for forming the ring. The aromatic hydrocarbon ring group contains none of anthracene skeleton, pyrene skeleton, aceanthrylene skeleton and naphthacene skeleton. L represents a single bond, a substituted or unsubstituted benzene skeleton, naphthalene skeleton, biphenylene skeleton, fluorene skeleton, phenanthrene skeleton, fluoranthene skeleton, triphenylene skeleton, chrysene skeleton, phenyl-naphthalene skeleton or binaphthalene skeleton. Rand Reach represent a substituent, the number of which may be 0, 1 or more. Rand Rmay be bonded in any positions of the phenanthrene skeleton. m, n, l and p each represent 0 or 1 while satisfying m+n+l+p≧1 (m,n≧l,p). a and b each represent an integer of 0 to 8.