Patent ID: 7112550

Claim:
An exhaust gas purifying catalyst, comprising: a honeycomb substrate which comprises a plurality of cells; and a HC adsorbent layer having a total thickness ranging from 100 μm to 500 μm and comprising a plurality of HC adsorbent sub-layers formed on an inner surface of a cell; the HC adsorbent sub-layers (i) comprising a zeolite, (ii) having a closed curve cross-sectional shape or a polygonal cross-sectional shape perpendicular to a direction in which each of the cells is extended, and (iii) containing first cracks which extend in an approximately circumferential direction and second cracks which extend in an approximately radial direction; wherein the HC adsorbent layer has, in a respective quarter region of the cross-sectional shape, a total number of connection points between intersecting first and second cracks not exceeding 20.