Water treatment and soil testing
USRE33487E · kind E · reissue
0Cited by
6References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 8, 1989 |
| Grant date | Dec 11, 1990 |
| Priority date | — |
| Expiry date | Sep 8, 2009 |
Classification
- Technology area (CPC —)General
Abstract
A device for treating water to reduce the concentration of cations or anions therein includes a water-tight container (4) of flexible material, designed to be able to lie substantially flat (FIG. 3) when empty and having an aperture (5) for the introduction of liquid, a strainer (7) extending across the aperture, and a closure (6) for the aperture, and a quantity of ion-exchange material (b 8) occupying a minor proportion of the available interior volume of the container. A soil extraction outfit and a soil testing outfit are described, which incorporate the water treatment device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.