Catalyst – solid sorbent – or support therefor: product or process – Miscellaneous
Reexamination Certificate
2010-03-08
2011-11-01
Zimmerman, John J (Department: 1784)
Catalyst, solid sorbent, or support therefor: product or process
Miscellaneous
C502S527220, C428S593000, C428S607000, C428S612000, C428S472000, C428S472200, C228S181000, C029S890000
Reexamination Certificate
active
08048823
ABSTRACT:
A foil for producing a metal honeycomb or catalyst carrier body, has an average surface roughness of more than 0.3 μm (micrometers) on both surfaces in at least one measurement direction. Preferably, the foil is rolled and has an average surface roughness of more than 0.3 or 0.5 μm, especially approximately 0.6 μm, in the rolling direction and/or transverse thereto. The foil can have an oxide coating with a thickness between 60 and 80 or between 70 and 75 nm (nanometers) on both surfaces. Despite the roughness, an even thickness of the oxide coating with a tolerance of less than 10% or 5% is advantageous on both surfaces. The foil allows production of durable honeycomb bodies, especially for exhaust systems of internal combustion engines, requiring an exactly defined distribution and quality of compounds in the interior thereof. A honeycomb body and method of production using a foil, are also provided.
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Machine translation of DE 3911619. 2 pages. Oct. 1990.
International Search Report dated Nov. 11, 2008.
Althöfer Kait
Brück Rolf
Hodgson Jan
Schepers Sven
EMITEC Gesellschaft fuer Emissionstechnologie mbH
Greenberg Laurence A.
Locher Ralph E.
Stemer Werner H.
Zimmerman John J
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