B60L 50/52
Characterised by dc-motors
Official title: characterised by DC-motors
B60L50/52 (Characterised by dc-motors) appears on 892 US grants and 783 published applications in this corpus.
Search patents in B60L- Granted patents
- 892
- Published applications
- 783
- Assignees
- 437
- Inventors
- 1,766
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 18 | 0 |
| 1977 | 3 | 0 |
| 1978 | 11 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 6 | 0 |
| 1982 | 5 | 0 |
| 1983 | 6 | 0 |
| 1984 | 5 | 0 |
| 1985 | 11 | 0 |
| 1986 | 7 | 0 |
| 1987 | 7 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 4 | 0 |
| 1991 | 9 | 0 |
| 1992 | 6 | 0 |
| 1993 | 11 | 0 |
| 1994 | 17 | 0 |
| 1995 | 14 | 0 |
| 1996 | 14 | 0 |
| 1997 | 13 | 0 |
| 1998 | 26 | 0 |
| 1999 | 11 | 0 |
| 2000 | 14 | 0 |
| 2001 | 14 | 5 |
| 2002 | 9 | 12 |
| 2003 | 9 | 24 |
| 2004 | 11 | 12 |
| 2005 | 12 | 14 |
| 2006 | 9 | 17 |
| 2007 | 11 | 14 |
| 2008 | 13 | 23 |
| 2009 | 11 | 17 |
| 2010 | 7 | 24 |
| 2011 | 10 | 39 |
| 2012 | 29 | 43 |
| 2013 | 38 | 62 |
| 2014 | 40 | 107 |
| 2015 | 65 | 95 |
| 2016 | 78 | 78 |
| 2017 | 80 | 54 |
| 2018 | 57 | 30 |
| 2019 | 49 | 19 |
| 2020 | 24 | 21 |
| 2021 | 27 | 20 |
| 2022 | 19 | 10 |
| 2023 | 9 | 11 |
| 2024 | 13 | 12 |
| 2025 | 10 | 10 |
| 2026 | 7 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Electrical energy system for barring rotor25 Aug 2026US 12,715,597 B2Rolls-Royce North American Technologies Inc.
- Electric generator for electric vehicle28 Jul 2026US 12,691,747 B2Power Technology Holdings LLC
- Motor control system with electric safety braking21 Jul 2026US 12,686,284 B2Ez-Wheel
- Energy management and control system14 Jul 2026US 12,679,230 B2
- Wheel and method for making wheel21 Apr 2026US 12,605,961 B2Honda Motor Co., Ltd.
- Fuel cell flexible power conversion module17 Sep 2026US 2026/0274096 A1Oshkosh Defense, LLC
- Assembly of Electric Lines Between a DC Power Source and an Electric Drive of a Vehicle10 Sep 2026US 2026/0269587 A1Bayerische Motoren Werke Aktiengesellschaft
- Method and system for cooling a traction component of a rail vehicle27 Aug 2026US 2026/0249890 A1Siemens Mobility GmbH
- A self-propelled device, working robot and charging system20 Aug 2026US 2026/0241821 A1Shenzhen Hanyang Technology Co., Ltd.
- Isolated single circuit for high voltage dc bus voltage sensing and passive discharging9 Jul 2026US 2026/0192690 A1Ford Global Technologies, LLC
Most cited
By later US patents
- Connection system and connection method for an electric automotive vehicle509US 5,821,731 ASumitomo Wiring Systems, Ltd. · 1998
- Charging system for a vehicle305US 5,049,802 ACaterpillar Industrial Inc. · 1991
- Robot cleaner, system thereof and method for controlling same282US 6,841,963 B2Samsung Gwangju Electronics Co., Ltd. · 2005
- Wireless energy transfer272US 9,142,998 B2The Board of Trustees of the Leland Stanford Junior University · 2015
- Power stand-up and reclining wheelchair252US 5,366,036 A1994