B61C
Locomotives
Official title: LOCOMOTIVES; MOTOR RAILCARS (vehicles in general B60; frames or bogies B61F; special railroad equipment for locomotives B61J, B61K)
B61C (Locomotives) appears on 1,627 US grants and 1,623 published applications in this corpus.
Search patents in B61C- Granted patents
- 1,627
- Published applications
- 1,623
- Assignees
- 594
- Inventors
- 3,288
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 7 | 0 |
| 1978 | 11 | 0 |
| 1979 | 13 | 0 |
| 1980 | 19 | 0 |
| 1981 | 11 | 0 |
| 1982 | 11 | 0 |
| 1983 | 7 | 0 |
| 1984 | 8 | 0 |
| 1985 | 7 | 0 |
| 1986 | 8 | 0 |
| 1987 | 13 | 0 |
| 1988 | 20 | 0 |
| 1989 | 22 | 0 |
| 1990 | 20 | 0 |
| 1991 | 18 | 0 |
| 1992 | 15 | 0 |
| 1993 | 16 | 0 |
| 1994 | 16 | 0 |
| 1995 | 18 | 0 |
| 1996 | 21 | 0 |
| 1997 | 14 | 0 |
| 1998 | 16 | 0 |
| 1999 | 11 | 0 |
| 2000 | 9 | 0 |
| 2001 | 17 | 7 |
| 2002 | 26 | 10 |
| 2003 | 17 | 16 |
| 2004 | 9 | 30 |
| 2005 | 18 | 23 |
| 2006 | 15 | 26 |
| 2007 | 12 | 17 |
| 2008 | 9 | 33 |
| 2009 | 10 | 31 |
| 2010 | 15 | 48 |
| 2011 | 20 | 35 |
| 2012 | 37 | 49 |
| 2013 | 45 | 73 |
| 2014 | 64 | 113 |
| 2015 | 89 | 99 |
| 2016 | 71 | 115 |
| 2017 | 98 | 99 |
| 2018 | 73 | 88 |
| 2019 | 79 | 111 |
| 2020 | 69 | 107 |
| 2021 | 89 | 110 |
| 2022 | 99 | 102 |
| 2023 | 85 | 87 |
| 2024 | 88 | 72 |
| 2025 | 70 | 63 |
| 2026 | 62 | 59 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Main groups
Granted patents with any code in the group
- B61C 17/00Arrangement or disposition of parts647
- B61C 3/00Electric locomotives or railcars320
- B61C 9/00Locomotives or motor railcars characterised by the type of transmission system used243
- B61C 15/00Maintaining or augmenting the starting or braking power by auxiliary devices and195
- B61C 13/00Locomotives or motor railcars characterised by their application to special systems or184
- B61C 5/00Locomotives or motor railcars with ic engines or gas turbines176
- B61C 11/00Locomotives or motor railcars characterised by the type of means applying the130
- B61C 7/00Locomotives: other locomotives or motor railcars characterised by the type of motive113
Recent patents
- Semiconductor device, power conversion device and moving body22 Sep 2026US 12,745,640 B2Mitsubishi Electric Corporation
- Contactless power feeder15 Sep 2026US 12,738,769 B2Daifuku Co., Ltd.
- Insulated feed-through connector8 Sep 2026US 12,728,728 B2Progress Rail Locomotive Inc.
- Order preparation or buffer storage system1 Sep 2026US 12,722,891 B2Exotec
- Device for transport by motorized zipwire, and associated transport assembly and method25 Aug 2026US 12,714,942 B2Pole d' Activities Sportives Culturelles et Touristiques
- Personal transportation system8 Oct 2026US 2026/0307695 A1TPT Technologies, Inc.
- Hybrid Train Energy Delivery System1 Oct 2026US 2026/0296507 A1AmeTrade, Inc.
- Coil device and in-vehicle device1 Oct 2026US 2026/0302038 A1Mitsubishi Electric Corporation
- Semiconductor device, semiconductor device manufacturing method, inverter circuit, drive device, vehicle, and elevator1 Oct 2026US 2026/0304858 A1Kabushiki Kaisha Toshiba
- Vehicle control system and method17 Sep 2026US 2026/0274314 A1Transportation IP Holdings, LLC
Most cited
By later US patents
- Power stand-up and reclining wheelchair252US 5,366,036 A1994
- Method and apparatus for sorting items245US 7,861,844 B2Opex Corporation · 2011
- Method and system for analyzing fault and snapshot operational parameter data for diagnostics of machine malfunctions167US 6,336,065 B12002
- Vehicle system and method166US 9,550,501 B2General Electric Company · 2017
- Method and system for analyzing fault log data for diagnostics160US 6,343,236 B12002