Exhaust purifying filter material and method for manufacturing the same
US5776419A · kind A · utility
11Cited by
9References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 9, 1995 |
| Grant date | Jul 7, 1998 |
| Priority date | — |
| Expiry date | Nov 9, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01N2330/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Exhaust purifying filter material which can carry a larger amount of catalyst and from which the catalyst will not easily drop off even if subjected to vibrations or temperature changes due to repeated heating and cooling at high temperatures. Catalyst is carried on alumina whiskers formed on metal fiber having a composition of Fe--Ni--Cr--Al, Fe--Cr--Al or Ni--Cr--Al or woven or unwoven fabric formed of the metal fiber. The catalyst is firmly carried by the alumina whiskers. The amount of catalyst carried is increased with the increase in surface area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.