Compact personal water purification device
US7438801B2 · kind B2 · utility
11Cited by
11References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 13, 2004 |
| Grant date | Oct 21, 2008 |
| Priority date | — |
| Expiry date | Jun 15, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A20/208
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A lightweight, portable, water purification device can be used to recover potable water from any water source. The manually operated device, requires no external power, is very lightweight, and removes salt and other impurities from source water while also disinfecting it. A symmetrical reverse osmosis (RO) membrane coupled with a pre-filter is used to remove salt and impurities from the raw water. Metal biocides are integratable to disinfect the permeate, improve wet storage and to significantly reduce biofouling within the RO membrane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.