Method of making wall-flow monolith filter
US6803015B2 · kind B2 · utility
10Cited by
42References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 23, 2002 |
| Grant date | Oct 12, 2004 |
| Priority date | — |
| Expiry date | May 12, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A ceramic honeycomb wall-flow filter is prepared by plugging channels in a ceramic honeycomb by a method comprising the following. First, a mixture comprised of a dispersing liquid and ceramic powder is formed. Next, the mixture is inserted on one end of the channel in an unplugged ceramic honeycomb such that the mixture flows to the other end where the mixture collects and forms a plugged ceramic honeycomb. Then, the plugged ceramic honeycomb is heated to a temperature sufficient to sinter the plugged ceramic honeycomb to form a porous sintered plugged ceramic honeycomb.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.