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. 13, 2009
Filed:
Dec. 13, 2005
Jae Hyuk Chang, Daejeon, KR;
Young Ji Tae, Seoul, KR;
Chong Kyu Shin, Daejeon, KR;
Bong Keun Lee, Daejeon, KR;
Jae Hyuk Chang, Daejeon, KR;
Young Ji Tae, Seoul, KR;
Chong Kyu Shin, Daejeon, KR;
Bong Keun Lee, Daejeon, KR;
LG Chem, Ltd., Seoul, KR;
Abstract
Disclosed is a sulfonated multiblock copolymer, which comprises a hydrophilic block (X) having a repeating unit represented by the following formula 1a, and a hydrophobic block (Y) having a repeating unit represented by the following formula 2, wherein the number (m) of the repeating unit of formula 1a in the hydrophilic block (X) and the number (n) of the repeating unit of formula 2 in the hydrophobic block (Y) satisfy the conditions of 4≦m≦400 and 4≧n≧400. An electrolyte membrane obtained from the sulfonated multiblock copolymer and a fuel cell using the electrolyte membrane are also disclosed:Ar—O—Ar—O  [Formula 1a]Ar—O—Ar—O  [Formula 2]