B61
Railways
B61 (Railways) appears on 17,013 US grants and 13,956 published applications in this corpus.
Search patents in B61- Granted patents
- 17,013
- Published applications
- 13,956
- Assignees
- 4,561
- Inventors
- 24,994
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 253 | 0 |
| 1977 | 227 | 0 |
| 1978 | 232 | 0 |
| 1979 | 154 | 0 |
| 1980 | 231 | 0 |
| 1981 | 229 | 0 |
| 1982 | 231 | 0 |
| 1983 | 165 | 0 |
| 1984 | 198 | 0 |
| 1985 | 156 | 0 |
| 1986 | 203 | 0 |
| 1987 | 237 | 0 |
| 1988 | 222 | 0 |
| 1989 | 240 | 0 |
| 1990 | 250 | 0 |
| 1991 | 253 | 0 |
| 1992 | 224 | 0 |
| 1993 | 220 | 0 |
| 1994 | 213 | 0 |
| 1995 | 257 | 0 |
| 1996 | 262 | 0 |
| 1997 | 236 | 0 |
| 1998 | 266 | 0 |
| 1999 | 203 | 0 |
| 2000 | 246 | 0 |
| 2001 | 334 | 80 |
| 2002 | 325 | 257 |
| 2003 | 293 | 289 |
| 2004 | 248 | 356 |
| 2005 | 229 | 360 |
| 2006 | 231 | 321 |
| 2007 | 198 | 343 |
| 2008 | 193 | 358 |
| 2009 | 203 | 355 |
| 2010 | 277 | 439 |
| 2011 | 242 | 412 |
| 2012 | 346 | 443 |
| 2013 | 456 | 510 |
| 2014 | 485 | 660 |
| 2015 | 500 | 668 |
| 2016 | 529 | 805 |
| 2017 | 626 | 687 |
| 2018 | 603 | 809 |
| 2019 | 685 | 911 |
| 2020 | 703 | 850 |
| 2021 | 651 | 837 |
| 2022 | 658 | 751 |
| 2023 | 579 | 741 |
| 2024 | 693 | 699 |
| 2025 | 640 | 603 |
| 2026 | 478 | 412 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subclasses
Granted patents
- B61LGuiding railway traffic5,152
- B61DBody details or kinds of railway vehicles4,660
- B61BRailway systems2,714
- B61FRail vehicle suspensions2,277
- B61CLocomotives1,627
- B61KAuxiliary equipment specially adapted for railways, not otherwise provided for1,195
- B61HBrakes or other retarding devices specially adapted for rail vehicles1,134
- B61GCouplings1,089
All 9 subclassesShow fewer
Recent patents
- Stiffening structure and method for stiffening a sheet element6 Oct 2026US 12,752,509 B2Photon, Inc.
- Wheel assemblies for shuttles powered by linear synchronous motors6 Oct 2026US 12,752,632 B1Amazon Technologies, Inc.
- Air conditioner for railway vehicle6 Oct 2026US 12,752,820 B2Mitsubishi Electric Corporation
- Rail vehicle6 Oct 2026US 12,752,821 B2Hitachi, Ltd.
- Magnetic track brake having a high-position detecting means installed in or on the actuation cylinder6 Oct 2026US 12,752,822 B2Knorr-Bremse GmbH
- Door leaf with unbonded seal8 Oct 2026US 2026/0307687 A1Bode—Die TüR GmbH
- Automatic Railcar Coupling System8 Oct 2026US 2026/0307688 A1Trackmobile LLC
- Rail guided carriage system and method for estimating abnormal section of rail guided carriage system8 Oct 2026US 2026/0307689 A1Murata Machinery, Ltd.
- Failsafe audible signal power assisted switch for railroads8 Oct 2026US 2026/0307690 A1Apex Rail Automation
- Railroad virtual track block system8 Oct 2026US 2026/0307691 A1BNSF Railway Company
Most cited
By later US patents
- LED vehicle lamp assembly654US 5,632,551 AGrote Industries, Inc. · 1997
- Interrogation, and detection system536US 4,075,632 AThe United States of America as represented by the United States Department of Energy · 1978
- Obstacle-detecting apparatus502US 5,331,312 AMatsushita Electric Industrial Co., Ltd. · 1994
- LED lamp assembly with means to conduct heat away from the LEDS470US 6,045,240 ARelume Corporation · 2000
- Signal light unit having heat dissipating function456US 4,729,076 A1988