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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50/00
in human health protection, e.g. against extreme weather
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Y02A50/20
Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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