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Section Y: Emerging Cross-Sectional Technologies

This section exists only in the CPC system and has no IPC equivalent.

~7,112,069

Applications (2013–2023)

PATSTAT worldwide

3

Classes

11

Subclasses

341

Main Groups

15,487

CPC Total

Description

Section Y provides supplementary cross-sectional tagging for inventions spanning multiple IPC sections or representing emerging technological developments that do not fit neatly within traditional classification boundaries. It captures hybrid technologies, interdisciplinary innovations, and special technical areas previously organized under US Patent and Trademark Office cross-reference art collections (XRACs). Codes in this section complement primary IPC classifications rather than replace them, enabling improved retrieval of patents addressing contemporary or boundary-crossing technological challenges. This classification system facilitates discovery of inventions at the intersection of distinct technical fields and supports analysis of complex, multi-domain innovations.

Visualizations

Timeline

Size of each class by number of subgroups

Classes in section Y by descendant count
ClassTitleDescendants
Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE339
Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS42
Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC15,102

Child Classifications

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Top Applicants

Top 10 applicants by patent filingsin section Y, 2013–2023, worldwide · Source: EPO PATSTAT

  1. TOYOTA MOTOR CORPORATION 50,480
  2. SGCC(STATE GRID CORPORATION OF CHINA) 33,956
  3. CHINESE ACADEMY OF SCIENCES 30,705
  4. LG CHEM KR 23,877
  5. LG ENERGY SOLUTION KR 20,650
  6. HYUNDAI MOTOR COMPANY KR 20,043
  7. ROBERT BOSCH DE 16,262
  8. SAMSUNG ELECTRONICS COMPANY KR 16,113
  9. GE (GENERAL ELECTRIC COMPANY) US 14,268
  10. GUANGDONG POWER GRID CORPORATION 3,187