Patent · US Expired

Electrolytic capacitor with fractal surface

US5822177A · kind A · utility

45Cited by

4References

16Claims

0Family size

Assignee

Biotronik Mess -und Therapiegeraede GmbH & Co. Ingenieurbuero Berlin · DE

Inventors

Thomas Popp · Rockenhausen, DE
Armin Bolz · Buckenhof, DE

Key dates

Filing date	Jul 11, 1996
Grant date	Oct 13, 1998
Priority date	—
Expiry date	Jul 11, 2016

Classification

Technology area (CPC H)Electricity
CPC primaryH01G9/042
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An electrolytic capacitor, in particular a tantalum electrolytic capacitor, is provided with a metal anode, in particular a sintered tantalum anode (1), a non-conducting insulating layer applied on it by means of molding the metal anode (1) for forming the dielectric of the electrolytic capacitor, an electrolyte in liquid, pasty or solid form, which forms the cathode of the electrolytic capacitor, and a flat cathode contact (5, 17) for providing current to the electrolyte. The flat cathode contact (5, 7) is provided with an electrically conducting, fractal surface coating (6), at least in the area of its contact surface with the electrolyte.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.