Patent classifications
C
CHEMISTRY; METALLURGY
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C02
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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C02F
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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1/00
Treatment of water, waste water, or sewage
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C02F1/001
Processes for the treatment of water whereby the filtration technique is of importance
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C02F1/002
using small portable filters for producing potable water, e.g. personal travel or emergency equipment, survival kits, combat gear
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