Coated activated carbon for automotive emission control
US7179382B2 · kind B2 · utility
9Cited by
2References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 5, 2002 |
| Grant date | Feb 20, 2007 |
| Priority date | — |
| Expiry date | Jun 17, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2991
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for avoidance of attrited carbon dust is disclosed to lead to improved canister performance in emission control. Product attrition by dusting of granular and shaped activated carbons is disclosed to be reduced significantly, or essentially eliminated, by the application of a thin, continuous polymer coating on the granular or shaped activated carbon, without a reduction in adsorption velocity or capacity of the activated carbon when used in automotive emission control canisters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.