Water purifying filter and water purifier using same
US12291466B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 24, 2019 |
| Grant date | May 6, 2025 |
| Priority date | — |
| Expiry date | Apr 29, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2101/36
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
One aspect of the present invention relates to a water purification filter including: a first support member; an activated carbon layer containing activated carbon and a fibrous binder; and a second support member. A 10% particle diameter (D10) of the activated carbon in a cumulative size distribution at volume standard is 19 to 90 μm, a 50% particle diameter (D50) of the activated carbon in the cumulative size distribution at volume standard is 120 to 180 μm, and a 90% particle diameter (D90) of the activated carbon in the cumulative size distribution at volume standard is 180 to 250 μm. The first support member has an airflow resistance of 0.5 to 10 mm H2O. The second support member has an airflow resistance of 0.5 to 7 mm H2O. The activated carbon layer has a thickness of 3 to 10 mm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.