Patent · US Expired

Water filtration apparatus

US5186830A · kind A · utility

51Cited by
4References
4Claims
0Family size

Inventor

Key dates

Filing dateMay 31, 1991
Grant dateFeb 16, 1993
Priority date—
Expiry dateMay 31, 2011

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC02F2307/04
  • WIPO fieldChemical engineering
  • WIPO sectorChemistry

Abstract

Abstract for filtering drinking water which includes a lower non-porous container to receive the filtrate. An upper filter vessel closed at its lower end by a high density ceramic filter is stacked in nested relationship to the lower container. When water containing contaminants and pollutants is poured into the filter vessel, it drips through the ceramic filter under gravitational forces and is stored in the lower receptacle.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.