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:
Aug. 28, 2001
Filed:
Jan. 28, 2000
Yukari Shimamoto, Kyoto, JP;
Tsuyoshi Yoshino, Kameoka, JP;
Abstract
A method of manufacturing solid electrolytic capacitors which prevents decrease in product yield due to degradation in characteristics of anode foil during a process of forming a MnO,layer, and achieves high quality solid electrolytic capacitors with high yield, wherein aluminum foil is sampled from each lot before inputting the lot into the next process of forming MnO,layer on a surface of aluminum foil, and a predetermined inspection is implemented after forming the MnO,layer on this sample. Based on inspection results, the lot of the sample is input to the next process. This method prevents occurrence of defects in the MnO,layer formation process in advance, and avoids finding defects after inputting the entire lot of aluminum foil to the MnO,layer formation process. Consequently, highly reliable solid electrolytic capacitors are manufactured inexpensively and stably without loss in costs and efficiency.