Method of making a prismatic capacitor
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United States of America Patent
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-
Jun 10, 2003
Grant Date -
N/A
app pub date -
Jul 20, 2001
filing date -
Jul 20, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method of making a flat capacitor includes forming at least one recess on an inside surface of a metal foil blank, leaving a surrounding peripheral flange. A coating performing as an electrode of the capacitor is applied to the inside surface of the metal foil blank and an ion-permeable separator is placed on that inside surface of the metal foil blank. A substantially planar anode with a protruding lead is placed in the recess with the lead extending through a hole of the metal foil blank. Thereafter, the metal foil blank is folded along a line intersecting the hole so that the anode is sandwiched between parts of the separator and the separator is in contact with the coating on the inside surface of the metal foil blank. In the folding process, parts of the peripheral flange of the metal foil blank are brought into contact with each other and these parts are sealed to each other to form a hermetically sealed metal foil case of the capacitor.
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