B60L 50/12
Using ac generators and dc motors
Official title: using AC generators and DC motors
B60L50/12 (Using ac generators and dc motors) appears on 57 US grants and 53 published applications in this corpus.
Search patents in B60L- Granted patents
- 57
- Published applications
- 53
- Assignees
- 42
- Inventors
- 135
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 4 |
| 2006 | 1 | 1 |
| 2007 | 2 | 3 |
| 2008 | 2 | 2 |
| 2009 | 0 | 1 |
| 2010 | 1 | 1 |
| 2011 | 1 | 2 |
| 2012 | 1 | 0 |
| 2013 | 1 | 3 |
| 2014 | 1 | 1 |
| 2015 | 1 | 3 |
| 2016 | 1 | 4 |
| 2017 | 0 | 3 |
| 2018 | 5 | 7 |
| 2019 | 5 | 4 |
| 2020 | 6 | 4 |
| 2021 | 1 | 1 |
| 2022 | 1 | 2 |
| 2023 | 0 | 2 |
| 2024 | 2 | 2 |
| 2025 | 5 | 2 |
| 2026 | 1 | 0 |
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.
- Power system for electrical power generation and distribution30 Dec 2025US 12,509,204 B2AB Volvo Penta
- Electric vehicle (EV) fast recharge station and system30 Dec 2025US 12,512,691 B2The Noco Company
- Vehicle auxiliary power system4 Mar 2025US 12,240,337 B1Lovis, LLC
- Electrical energy system for barring rotor25 Feb 2025US 12,234,022 B2Rolls-Royce North American Technologies Inc.
- Vehicle auxiliary power system14 Aug 2025US 2025/0256588 A1Lovis, LLC
- Electrical energy system for barring rotor15 May 2025US 2025/0153855 A1Rolls-Royce North American Technologies Inc.
- Electric Vehicle (EV) Fast Recharge Station and System6 Jun 2024US 2024/0186815 A1The Noco Company
- Electrical energy system for barring rotor15 Feb 2024US 2024/0055957 A1Rolls-Royce North American Technologies Inc.
- Power system for electrical power generation and distribution24 Aug 2023US 2023/0264797 A1AB Volvo Penta
Most cited
By later US patents
- Mobile, off-road, heavy-duty haulage vehicle86US 4,719,361 ADresser Industries, Inc. · 1988
- Electric propulsion system for traction vehicles with automatic retard speed regulation54US 4,495,449 AGeneral Electric Company · 1985
- Control system for an electrically propelled traction vehicle46US 5,280,223 AGeneral Electric Company · 1994
- Control system for an electrically propelled traction vehicle41US 5,432,413 AGeneral Electric Company · 1995
- Series parallel transition for power supply40US 4,339,704 AGeneral Electric Company · 1982