Manufacturing method for exhaust gas purification device
US12121858B2 · kind B2 · utility
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10References
7Claims
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Key dates
| Filing date | Nov 8, 2019 |
| Grant date | Oct 22, 2024 |
| Priority date | — |
| Expiry date | May 15, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S4/903
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A production method of an exhaust gas purification device includes the steps of supplying a solution containing a catalyst metal from a shower nozzle to an upper part of a honeycomb substrate, coating the honeycomb substrate with the solution, and firing the honeycomb substrate coated with the solution, wherein the shower nozzle has a plurality of discharge openings for discharging the solution and a guard which surrounds the plurality of discharge openings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.