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:
Sep. 14, 2010
Filed:
Nov. 14, 2006
Applicants:
Haruhiko Kusaka, Kanagawa, JP;
Yuji Ohgomori, Kanagawa, JP;
Masashi Yamanashi, Kanagawa, JP;
Inventors:
Assignee:
Mitsubishi Chemical Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C08G 73/16 (2006.01); C08G 63/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
A tetracarboxylic acid compound of formula (1) or (2) wherein A represents a divalent group; X, Xand Xrespectively represent a hydrogen atom or the like; R, R, Rand Rrespectively represent a carboxyl group or an acid anhydride group; n represents 1 or 2; and B represents a cyclic group.