Injection valve

Etching a substrate: processes – Etching to produce porous or perforated article

Reexamination Certificate

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Details

C239S136000, C239S533200, C239S585100, C239S005000, C239S462000

Reexamination Certificate

active

10405483

ABSTRACT:
A method for producing a filter element includes forming longitudinal ducts extending between upstream and downstream surfaces of the filter element, and installing a heating element for heating regions of walls of the ducts along longitudinal extent of the walls. The filter element is arranged inside an injection valve of an internal combustion engine.

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patent: 6817708 (2004-11-01), Kneezel
patent: 41 21 075 (1993-01-01), None
patent: 0 472 417 (1992-02-01), None
patent: WO 93/02284 (1993-02-01), None

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