mechanically

Introduced: September 1968

Last revised: January 2006

Full Title

Safety means for rail/road crossing traffic > Operation of gates; Combined operation of gates and signals > Operation by approaching rail vehicle or train > mechanically

Classification Context

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

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