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:
Dec. 22, 2009
Filed:
Feb. 04, 2004
Kazushi Mashima, Ikeda, JP;
Koji Ohno, Osaka, JP;
Kazuhiko Matsumura, Hiratsuka, JP;
Takasago International Corporation, Tokyo, JP;
Abstract
A ligand represented by the formula (1):RRN-Q-X-Q-NRR  (1)wherein R, R, Rand Rare each the same or different and represent a group represented by the formula (2): wherein Qis an optionally substituted alkylene group, an optionally substituted cycloalkylene group, an optionally substituted arylene group, or an optionally substituted divalent heterocyclic group, Ris an optionally substituted alkyl group, an optionally substituted aryl group or an optionally substituted heterocyclic group and Ris a substituent which may coordinate or bind to a metal atom, or Rand R, taken together, may form a ring, Qand Qare each the same or different and represent an optionally substituted alkylene group or a single bond, and X is a divalent spacer.