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IPC Subgroup
B61L 29/04

Gates for level crossings

Introduced: September 1968

Last revised: January 2006

Full Title

Safety means for rail/road crossing traffic > Gates for level crossings

Classification Context

Section:
PERFORMING OPERATIONS; TRANSPORTING
Class:
RAILWAYS
Subclass:
GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC

Filing statistics

IPC B61L 29/04 belongs to the parent subclass B61L, which recorded 37,431 patent applications worldwide between 2013 and 2023. Annual filings grew from 2,164 in 2013 to 4,116 in 2023 (+90%), peaking at 4,220 applications in 2020. The most active applicants in class B61 are SIEMENS MOBILITY (2,749 applications), CRRC QINGDAO SIFANG COMPANY (2,215 applications) and SIEMENS (1,941 applications).

Source: EPO PATSTAT, worldwide filings

Related Keywords

GATES for railway level crossings

1 direct subcode

Child Classifications

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  • B61L 29/06 yielding to vehicles in one direction but operated in a different direction

Top Applicants

Top 10 applicants by patent filingsfor class B61, 2013–2023, worldwide · Source: EPO PATSTAT

  1. SIEMENS MOBILITY DE 2,749
  2. CRRC QINGDAO SIFANG COMPANY 2,215
  3. SIEMENS DE 1,941
  4. ALSTOM TRANSPORT TECHNOLOGIES FR 1,514
  5. BYD COMPANY 1,371
  6. CRRC CHANGCHUN RAILWAY VEHICLES COMPANY 1,205
  7. CRRC ZHUZHOU LOCOMOTIVE COMPANY 1,165
  8. CRRC TANGSHAN COMPANY 1,119
  9. BOMBARDIER TRANSPORTATION DE 1,001
  10. SOUTHWEST JIAOTONG UNIVERSITY 958