IPC Subgroup
B61L 27/1 Operations, e.g. scheduling or time tables
Introduced: January 2022
Full Title
Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor > Operations, e.g. scheduling or time tables
Classification Context
- Section:
- PERFORMING OPERATIONS; TRANSPORTING
- Class:
- RAILWAYS
- Subclass:
- GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
4 direct subcodes
Child Classifications
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- B61L 27/12 Preparing schedules
- B61L 27/14 Following schedules
- B61L 27/16 Trackside optimisation of vehicle or train operation
- B61L 27/18 Crew rosters; Itineraries
Top Applicants
Top 10 applicants by patent filingsfor class B61, 2013–2023, worldwide · Source: EPO PATSTAT
- SIEMENS MOBILITY DE 2,749
- CRRC QINGDAO SIFANG COMPANY 2,215
- SIEMENS DE 1,941
- ALSTOM TRANSPORT TECHNOLOGIES FR 1,514
- BYD COMPANY 1,371
- CRRC CHANGCHUN RAILWAY VEHICLES COMPANY 1,205
- CRRC ZHUZHOU LOCOMOTIVE COMPANY 1,165
- CRRC TANGSHAN COMPANY 1,119
- BOMBARDIER TRANSPORTATION DE 1,001
- SOUTHWEST JIAOTONG UNIVERSITY 958