Patent classifications
Y
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Y02
TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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Y02A
TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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20/00
Water conservation; Efficient water supply; Efficient water use
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Y02A20/20
Controlling water pollution; Waste water treatment
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Y02A20/208
Off-grid powered water treatment
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Y02A20/211
Solar-powered water purification
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