Effective alternative filter cleaner for biguanide treated recreational water systems
US5801133A · kind A · utility
0Cited by
30References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 8, 1995 |
| Grant date | Sep 1, 1998 |
| Priority date | — |
| Expiry date | May 8, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D41/04
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An aqueous, biodegradable acid-based cleaner employing a dicarboxylic acid selected from oxalic acid, malonic acid, and tartaric acid and a tricarboxylic acid selected from citric acid and ascorbic acid is disclosed. A method for cleaning a filter used to filter biguanide-treated recreational water is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.