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IPC Class
B61

RAILWAYS

Classification Context

Section:
PERFORMING OPERATIONS; TRANSPORTING
Class:
RAILWAYS

Description

B61 encompasses the design, construction, operation, and maintenance of railway systems and infrastructure. This classification covers railway tracks, rail vehicles (locomotives, carriages, wagons), signalling and safety systems, coupling devices, and associated mechanical and electrical equipment for ground-based rail transport. It includes both conventional railways and specialized rail systems such as rack railways, funicular railways, and monorails, but excludes air-cushion vehicles and magnetic levitation systems which fall under separate transport classifications.

Filing statistics

IPC B61 recorded 166,154 patent applications worldwide between 2013 and 2023, summed across its 9 subclasses. Annual filings grew from 9,726 in 2013 to 15,511 in 2023 (+59%), peaking at 20,329 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

passenger-carrying AMUSEMENT(S) railways

9 direct subcodes

Child Classifications

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Top Applicants

Top 10 applicants by patent filings, 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