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:
Feb. 24, 2009
Filed:
Apr. 26, 2006
Yoshihiro Saida, Tokyo, JP;
Yoshifumi Asai, Tokyo, JP;
Hideki Oohata, Tokyo, JP;
Showa Denko K.K., Tokyo, JP;
Abstract
The present invention relates to an anode substrate for a solid electrolytic capacitor which is produced by cutting obliquely a metal substrate comprising a valve-acting metal layer having fine pores and a valve-acting metal layer without fine pores, and having a cut surface which is formed by elongation of the valve-acting metal layer without fine pores dragged by a cutting blade; particularly to an anode substrate for a solid electrolytic capacitor which is produced by cutting obliquely a metal substrate comprising a valve-acting metal layer having fine pores and a valve-acting metal layer without fine pores, and a layer of the elongated valve-acting metal which is generated by that the valve-acting metal layer without fine pores is elongated being dragged along with a cutting blade and covers the edge part of the valve-acting layer having fine pores meets the requirement represented by the following formula:0≦≦1  [Formula 1]wherein y represents the thickness of the layer of the elongated valve-acting metal in the direction of the thickness of the substrate and z represents the thickness of the valve-acting layer having fine pores which is in contact with the elongated metal layer in the direction of the thickness of the substrate, respectively; and to a solid electrolytic capacitor comprising the above-mentioned anode substrate, an edge of which is chamfered at least partially.