B61K
Auxiliary equipment specially adapted for railways, not otherwise provided for
B61K (Auxiliary equipment specially adapted for railways, not otherwise provided for) appears on 1,195 US grants and 1,123 published applications in this corpus.
Search patents in B61K- Granted patents
- 1,195
- Published applications
- 1,123
- Assignees
- 661
- Inventors
- 2,553
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 20 | 0 |
| 1977 | 14 | 0 |
| 1978 | 18 | 0 |
| 1979 | 8 | 0 |
| 1980 | 11 | 0 |
| 1981 | 12 | 0 |
| 1982 | 12 | 0 |
| 1983 | 7 | 0 |
| 1984 | 8 | 0 |
| 1985 | 14 | 0 |
| 1986 | 8 | 0 |
| 1987 | 10 | 0 |
| 1988 | 9 | 0 |
| 1989 | 19 | 0 |
| 1990 | 13 | 0 |
| 1991 | 10 | 0 |
| 1992 | 8 | 0 |
| 1993 | 13 | 0 |
| 1994 | 12 | 0 |
| 1995 | 15 | 0 |
| 1996 | 10 | 0 |
| 1997 | 17 | 0 |
| 1998 | 12 | 0 |
| 1999 | 15 | 0 |
| 2000 | 11 | 0 |
| 2001 | 24 | 6 |
| 2002 | 20 | 20 |
| 2003 | 21 | 25 |
| 2004 | 22 | 27 |
| 2005 | 13 | 19 |
| 2006 | 17 | 28 |
| 2007 | 21 | 37 |
| 2008 | 12 | 28 |
| 2009 | 20 | 30 |
| 2010 | 28 | 38 |
| 2011 | 23 | 25 |
| 2012 | 22 | 31 |
| 2013 | 39 | 39 |
| 2014 | 29 | 59 |
| 2015 | 42 | 41 |
| 2016 | 33 | 57 |
| 2017 | 37 | 60 |
| 2018 | 46 | 50 |
| 2019 | 65 | 62 |
| 2020 | 51 | 82 |
| 2021 | 41 | 72 |
| 2022 | 62 | 52 |
| 2023 | 40 | 64 |
| 2024 | 71 | 69 |
| 2025 | 54 | 57 |
| 2026 | 36 | 45 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Main groups
Granted patents with any code in the group
- B61K 9/00Railway vehicle profile gauges697
- B61K 3/00Wetting or lubricating rails or wheel flanges136
- B61K 7/00Railway stops fixed to permanent way136
- B61K 13/00Auxiliary equipment specially adapted for railways, not otherwise provided for: other auxiliaries91
- B61K 5/00Apparatus for placing vehicles on the track87
- B61K 1/00Transferring passengers, articles, or freight to and from moving trains46
- B61K 11/00Serving peculiar to locomotives24
Recent patents
- Traveling rail detection system with a multi-axis adjustment of detection device29 Sep 2026US 12,746,955 B2Shanghai Oriental Machine Vision & Inspection Technology Co., Ltd
- Railway management system with brake calculation and related method29 Sep 2026US 12,746,959 B2Wsp Global, Inc.
- Locked-axle spring compression system and method15 Sep 2026US 12,735,080 B2BNSF Railway Company
- Systems and methods for detecting tanks in railway environments1 Sep 2026US 12,722,670 B2BNSF Railway Company
- Device and method for monitoring railway health in large windy desert area1 Sep 2026US 12,722,672 B2Lanzhou University
- Rail guided carriage system and method for estimating abnormal section of rail guided carriage system8 Oct 2026US 2026/0307689 A1Murata Machinery, Ltd.
- Device for supplying electrical energy to a vehicle of an amusement ride, in particular of a roller coaster, and vehicle and amusement ride1 Oct 2026US 2026/0302886 A1Mack Rides GmbH & Co. KG
- Rail vehicle and method for capturing a track gauge course24 Sep 2026US 2026/0285378 A1Plasser & Theurer Export Von Bahnbaumaschinen Gesellschaft M. B. H.
- In-motion track stiffness change detection17 Sep 2026US 2026/0274311 A1University of South Carolina
- Integrated intelligent cab system for train drivers3 Sep 2026US 2026/0257708 A1Casco Signal Ltd.
Most cited
By later US patents
- Automated track inspection vehicle and method122US 6,064,428 ANational Railroad Passenger Corporation · 2000
- Railroad track profile spacing and alignment apparatus114US 4,040,738 AGulton Industries, Inc. · 1977
- Method and apparatus for monitoring railway defects102US 5,867,404 ACairo Systems, Inc. · 1999
- Apparatus and method for detecting defective conditions in railway vehicle wheels and railtracks90US 5,433,111 AGeneral Electric Company · 1995
- Bearing with sensor module88US 6,161,962 AThe Timken Company · 2000