Purification filter element and water purification cup
US11142475B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 2020 |
| Grant date | Oct 12, 2021 |
| Priority date | — |
| Expiry date | May 15, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2307/04
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
The present disclosure relates to water purification devices, and more particularly to a purification filter element and a water purification cup. The purification filter element includes a housing including a sterilization case, an activated carbon filtering section and an ion exchange resin filtering section from bottom to top. The sterilization case includes a first casing which is filled with brominated polystyrene hydantoin and a first filter screen. A gap is formed between the bottoms of the first casing and the housing. A flow limit hole is provided at the bottom of the housing. The water purification cup includes the purification filter element and a cup body. A water feed cup is detachably fastened in the cup body. A bottom of the water feed cup is connected to the housing of the purification filter element through a connection hole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.