Exhaust gas treatment device and method for making the same

Metal working – Method of mechanical manufacture – Catalytic device making

Reexamination Certificate

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C422S177000, C422S179000, C422S180000

Reexamination Certificate

active

07971357

ABSTRACT:
A device for treatment of exhaust gases includes a housing, a fragile structure resiliently mounted within the housing, and a non-intumescent mounting mat disposed in a gap between the housing and the fragile structure. The mounting mat includes a plurality of inorganic fibers that have undergone a surface treatment to increase the holding force performance of the mounting mat. Also disclosed are methods of making a mounting mat for an exhaust gas treatment device and for making an exhaust gas treatment device incorporating the mounting mat.

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