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. 16, 2014
Filed:
Mar. 29, 2011
Nozomu Kamiyama, Tokyo, JP;
Kenji Machida, Tokyo, JP;
Atsushi Yoshizawa, Tokyo, JP;
Sekihiro Takeda, Tokyo, JP;
Kenji Tamamitsu, Tokyo, JP;
Nozomu Kamiyama, Tokyo, JP;
Kenji Machida, Tokyo, JP;
Atsushi Yoshizawa, Tokyo, JP;
Sekihiro Takeda, Tokyo, JP;
Kenji Tamamitsu, Tokyo, JP;
Abstract
A solid electrolytic capacitor is impregnated with a conductive polymer dispersion solution comprising sorbitol. In the capacitor, the hydroxyl group of sorbitol acts as the oxygen source necessary for the anodic oxidation of anodic oxide film when voltage is applied to the solid electrolytic capacitor. Consequently, the oxide film is repaired and withstand voltage property is improved, which is thought to be due to the anodic oxidation that repairs the damage on the oxide film. Superior electric capacitance can further be attained by specifying the sorbitol content in the dispersion solution to be at 60-90 wt %.