Marked honeycomb structure
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United States of America Patent
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Oct 15, 2013
Grant Date -
May 24, 2012
app pub date -
Jul 9, 2010
filing date -
Jul 9, 2009
priority date (Note) -
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Abstract
The invention relates to a honeycomb structure including a set of adjacent channels, each channel being in communication with upstream and downstream surfaces, respectively, via upstream and downstream openings, such that said set of channels forms cross-sectional upstream and downstream patterns on said upstream and downstream surfaces, respectively. According to the invention, at least one of the upstream and downstream surfaces has an error-proofing mark extending over fewer than 50 channels and making it impossible to completely stack any one of the upstream and downstream patterns onto the other, the outer perimeter of the upstream and/or downstream pattern being symmetrical or having an asymmetry that extends over fewer than 10 channels. The invention can be used in the filtration of particles contained it the exhaust gases of internal combustion engines, in particular diesel engines.
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