Anodes with corner and edge modified designs

Details Anodes with corner and edge modified designs Anodes with corner and edge modified designs

2007-05-30

2010-02-09

Xu, Ling (Department: 1794)

Stock material or miscellaneous articles

Structurally defined web or sheet

Edge feature

C428S220000, C428S304400, C428S319100, C428S319300, C428S209000, C428S689000, C428S698000, C428S702000, C361S528000

Reexamination Certificate

active

07658986

ABSTRACT:
Porous sintered anode bodies for capacitors formed from valve metals are treated by electrolysis to form a dielectric layer and coated with cathode layers. When standard parallelpiped shapes are used, cathode coverage at the edges and corners is non-uniform and failures occur at those locations. Rectangular prisms, obround prisms and cylindrical prisms are formed with transition surfaces at edges and corners, such as chamfers and curves, to enhance cathode layer uniformity. The transition surface greatly enhances the application of polymer slurries.

REFERENCES:
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patent: 7116548 (2006-10-01), Satterfield, Jr. et al.
patent: 7154742 (2006-12-01), Hahn et al.
patent: 7190572 (2007-03-01), Maeda
patent: 2005/0231895 (2005-10-01), Maeda
patent: 2006/0233653 (2006-10-01), Trapalis
Improving Thermal Shock Resistance of Surface Mount Tantalum Capacitors, D.M. Fortin, J.B. Edson, Mar. 23, 1994, R & M Library Citation.

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