Apparatus for cleaning sandy or pebble-covered sites
US4993498A · kind A · utility
19Cited by
5References
15Claims
0Family size
Inventor
Key dates
| Filing date | May 16, 1988 |
| Grant date | Feb 19, 1991 |
| Priority date | — |
| Expiry date | May 16, 2008 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01H12/002
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method and apparatus for disinfecting sand with an electrolysate of sea water, whose concentration of chlorine equivalent is 200-2000 mg/l before redepositing sifted sand back on to the beach.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.