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IPC Main Group
B61D 37/00

Other furniture or furnishings

Introduced: September 1968

Last revised: January 2006

Classification Context

Section:
PERFORMING OPERATIONS; TRANSPORTING
Class:
RAILWAYS
Subclass:
BODY DETAILS OR KINDS OF RAILWAY VEHICLES

Filing statistics

IPC B61D 37/00 belongs to the parent subclass B61D, which recorded 44,184 patent applications worldwide between 2013 and 2023. Annual filings grew from 2,517 in 2013 to 3,758 in 2023 (+49%), peaking at 5,820 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

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