B61L 27/57

For vehicles or trains

Official title: for vehicles or trains, e.g. trackside supervision of train conditions

B61L27/57 (For vehicles or trains) appears on 359 US grants and 500 published applications in this corpus.

Search patents in B61L
Granted patents
359
Published applications
500
Assignees
176
Inventors
1,039
Latest grant
6 Oct 2026

Filings by year

B61L 27/57: granted patents and published applications per publication year
YearGranted patentsPublished applications
198110
198200
198300
198400
198500
198600
198700
198800
198900
199000
199100
199200
199300
199400
199510
199600
199700
199800
199900
200010
200131
2002613
200373
200456
200559
200662
200744
200812
200925
201057
201135
201256
201369
2014912
201599
20161437
20171950
20182421
20192630
20202637
20212246
20221737
20232935
20243634
20253954
20262826

By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.

Recent patents

Most cited

By later US patents