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DIFF Subclass Not Allocatable Additional Only
Y02W

CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT

Description

Y02W covers technologies and processes designed to reduce greenhouse gas emissions or improve resource efficiency in wastewater treatment and waste management systems. This includes innovations in treatment methods, waste-to-energy conversion, circular economy approaches, and management practices that lower the carbon footprint of these operations. The classification encompasses both end-of-pipe solutions and preventive measures across municipal, industrial, and agricultural wastewater contexts, as well as solid waste handling systems. Y02W serves as a cross-sectional tagging mechanism to identify climate-relevant inventions in waste-related fields, complementing more technical classifications elsewhere in the IPC/CPC system.

Of 3 combined children, 0 exist in both systems.

3 codes are CPC-only extensions.

Note: 3 CPC extensions are marked as secondary classification only.

Top Applicants

Top Applicants (CPC)

Class Y02,2013–2023, worldwide · Source: EPO PATSTAT

  1. CHINESE ACADEMY OF SCIENCES 30,705
  2. TOYOTA MOTOR CORPORATION 29,065
  3. SGCC(STATE GRID CORPORATION OF CHINA) 22,908
  4. LG CHEM KR 22,513
  5. LG ENERGY SOLUTION KR 20,650
  6. TOYOTA MOTOR CORPORATION JP 18,015
  7. HYUNDAI MOTOR COMPANY KR 17,857
  8. ROBERT BOSCH DE 16,262
  9. SAMSUNG ELECTRONICS COMPANY KR 14,408
  10. GE (GENERAL ELECTRIC COMPANY) US 12,474