Gas removal method and gas removal filter
US6723151B2 · kind B2 · utility
4Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2002 |
| Grant date | Apr 20, 2004 |
| Priority date | — |
| Expiry date | Sep 26, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D53/0454
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A gas removal filter has an ion exchanger for adsorbing a gas and at least a pair of electric resistance measuring electrodes disposed on the ion exchanger. By measuring a change in the electric resistance between at least the pair of electric resistance measuring electrodes disposed on the ion exchanger, it is possible to estimate an ion exchange group consumption ratio of the ion exchanger. The ion exchange group consumption ratio of the ion exchanger can be detected in a short period of time, and a remaining adsorption capability of the ion exchanger can be known with ease.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.