Control of protozoa and protozoan cysts that harbor legionella
US6579859B1 · kind B1 · utility
5Cited by
0References
7Claims
0Family size
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Key dates
| Filing date | Jun 10, 2002 |
| Grant date | Jun 17, 2003 |
| Priority date | — |
| Expiry date | Jun 10, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A50/30
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A method of controlling protozoa trophozoite and cysts is disclosed, comprising administering a phosphonium salt of the formula: (R1)3P−R2.X−, wherein R1 is an alkyl group having from 1-8 carbons and R2 is a chain substituent having 6-20 carbons, to aqueous systems harboring protozoa trophozoites and cysts. Addition of such phosphonium salts to aqueous systems was found to be effective at killing both the protozoa trophozoites and cysts. By effectively killing both the protozoa trophozoites and cysts, organism such as Legionella cells harbored in both the trophozoites and cysts are killed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.