B61D 15/12
Power propelled
Official title: power propelled
B61D15/12 (Power propelled) appears on 32 US grants and 41 published applications in this corpus.
Search patents in B61D- Granted patents
- 32
- Published applications
- 41
- Assignees
- 40
- Inventors
- 122
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 1 | 2 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 1 | 2 |
| 2018 | 1 | 1 |
| 2019 | 2 | 7 |
| 2020 | 3 | 2 |
| 2021 | 1 | 4 |
| 2022 | 3 | 4 |
| 2023 | 1 | 3 |
| 2024 | 4 | 7 |
| 2025 | 4 | 3 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Rail inspection device12 May 2026US 12,623,695 B2Samsung Electronics Co., Ltd.
- Track travelling device11 Nov 2025US 12,466,449 B2Jingdong Technology Information Technology Co., Ltd.
- Transformable robot mechanism and inspection robot1 Jul 2025US 12,344,284 B2Guangdong Keystar Intelligence Robot Co., Ltd.
- Gate catch assembly20 May 2025US 12,305,427 B2Melvelle Equipment Corp. Pty Ltd
- Drone with railway driving capabilities13 May 2025US 12,296,993 B2Railway Robotics AS
- Method and system for autonomous inspection for elongated infrastructure elements2 Jul 2026US 2026/0186506 A1Premier Seals India Private Ltd
- Mobile platform and system for powering rail operations26 Mar 2026US 2026/0084539 A1Transportation IP Holdings, LLC
- Motorized railway safety cart and deployment system thereof8 Jan 2026US 2026/0008486 A1Kronos Aerial Photography Ltd.
- Method for determining at least one geometry parameter of a railroad track and system for implementing the method16 Oct 2025US 2025/0319910 A1Matisa Materiel Industriel S.A.
- Electric draisine3 Jul 2025US 2025/0214631 A1Keolis SA
Most cited
By later US patents
- Vehicle for and method of operation on both road and railroad track19US 4,048,925 ASwedish Rail System AB SRS · 1977
- Vehicle having variable gauge rail wheels19US 4,942,826 ATrackmobile LLC · 1990
- Personal transit vehicle using single rails17US 8,720,345 B1Rail Pod Inc. · 2014
- Hydraulically driven railway car6US 4,356,773 AQueen's University at Kingston · 1982
- Autonomous railroad monitoring and inspection device5US 10,029,708 B22018