Emission control device
US5238470A · kind A · utility
36Cited by
7References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 2, 1992 |
| Grant date | Aug 24, 1993 |
| Priority date | — |
| Expiry date | Jul 2, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B32/342
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Lignocellulosic carbonaceous material is activated to produce a high activity, high density gas-phase activated carbon under conditions which effectively alter the particle pore size distribution to optimize the carbon's mesoporosity. Alternative processes are disclosed for producing the carbon, as are its application in emission control for vehicles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.