Patent ID: 7651639

Claim:
A method for preparing a conductive polymer, comprising: Preparing a poly 3,4-ethylene dioxythiophene having a matrix by chemical oxidation polymerization of 3,4-ethylene dioxythiophene in the presence of a transition metal salt of an organic sulfonic acid serving as an oxidant, the poly 3,4-ethylene dioxythiophene including the transition metal salt of the organic sulfonic acid as a dopant; and subsequently performing an organic sulfonate treatment on the poly 3,4-ethylene dioxythiophene using an organic sulfonate made of an anion of an acid selected from the group consisting of phenol sulfonic acid, cresol sulfonic acid and benzaldehyde sulfonic acid, and a metal cation other than a transition metal. As written above, claim 1 , line 4, the term “the” preceding “transition metal salt” has been changed to “a” to address a lack of antecedent issue. In claim 1 , line 5, the term “the” preceding “organic sulfonic acid” has been changed to “an” to address a lack of antecedent issue. In claim 1 , lines 8-12, the term “subjecting” of line 8 is clarified by replacing the paragraph with “subsequently performing an organic sulfonate treatment on the poly 3,4-ethylene dioxythiophene using an organic sulfonate made of an anion of an acid selected from the group consisting of phenol sulfonic acid, cresol sulfonic acid and benzaldehyde sulfonic acid, and a metal cation other than a transition metal”.