Low concentration phosphine fumigation method
US5403597A · kind A · utility
9Cited by
5References
4Claims
0Family size
Inventor
Key dates
| Filing date | Nov 22, 1993 |
| Grant date | Apr 4, 1995 |
| Priority date | — |
| Expiry date | Nov 22, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01N59/26
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method for fumigating an enclosed structure includes release of sufficient phosphine into the enclosed structure to maintain an average concentration of between about 50 ppm and 500 ppm phosphine. Concurrently, sufficient carbon dioxide is released into the enclosed structure to maintain an average concentration of between about 4% and 10% carbon dioxide, and a temperature of between about 30 degrees Celsius to about 40 degrees Celsius is maintained in the enclosed structure to enhance fumigation effectiveness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.