Methods and apparatus for plugging cells of ceramic structures and honeycomb filters
US11883768B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 15, 2019 |
| Grant date | Jan 30, 2024 |
| Priority date | — |
| Expiry date | Sep 27, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2279/30
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for plugging a subset of cells of a honeycomb structure that includes: covering a first end face of the honeycomb structure with a mask that comprises a body and a plurality of openings, wherein the plurality of openings of the mask is coincident with a plurality of cells of the honeycomb structure; providing a plug of material upon a film material; applying a force to the film material with a piston to push the plug of material through the plurality of openings of the mask and into the plurality of cells of the honeycomb structure; and measuring a plurality of pressures within the plurality of cells of the honeycomb structure during the applying step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.