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:
Mar. 23, 2010
Filed:
Nov. 27, 2007
Takeo Kasuga, Sendai, JP;
Yuji Yoshida, Sendai, JP;
Masanori Takahashi, Sendai, JP;
Ryuta Kobayakawa, Sendai, JP;
Takeshi Saito, Sendai, JP;
Koji Sakata, Sendai, JP;
Sadamu Toita, Sendai, JP;
Katsuhiro Yoshida, Sendai, JP;
Takeo Kasuga, Sendai, JP;
Yuji Yoshida, Sendai, JP;
Masanori Takahashi, Sendai, JP;
Ryuta Kobayakawa, Sendai, JP;
Takeshi Saito, Sendai, JP;
Koji Sakata, Sendai, JP;
Sadamu Toita, Sendai, JP;
Katsuhiro Yoshida, Sendai, JP;
NEC TOKIN Corporation, Sendai-shi, JP;
Abstract
A solid electrolytic capacitor includes a valve metal formed with an anodized film; an inner conductive polymer film formed on the anodized film; and an outer conductive polymer film formed on the inner conductive polymer film. The outer conductive polymer film is obtained by: preparing a first polymer solution (PEDOT/PSSA); dissolving a predetermined dissolved substance in a non-aqueous solvent, the predetermined dissolved substance being selected from the group consisting of boric acid, 1-naphthalenesulfonic acid, 2-naphthalenesulfonic acid, 1,3,6-naphthalenetrisulfonic acid, and polystyrenesulfonic acid, and a salt thereof; mixing the dissolved solvent with pure water to obtain an additive solution; adding the additive solution into the first polymer solution to obtain a second polymer solution; and applying the second polymer solution to the inner conductive polymer film.