H02K 23/52
Motors acting also as generators
Official title: Motors acting also as generators, e.g. starting motors used as generators for ignition or lighting
H02K23/52 (Motors acting also as generators) appears on 19 US grants and 18 published applications in this corpus.
Search patents in H02K- Granted patents
- 19
- Published applications
- 18
- Assignees
- 14
- Inventors
- 43
- Latest grant
- 26 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 2 |
| 2005 | 1 | 1 |
| 2006 | 2 | 2 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 1 |
| 2014 | 1 | 1 |
| 2015 | 1 | 2 |
| 2016 | 2 | 1 |
| 2017 | 2 | 2 |
| 2018 | 1 | 2 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Apparatus for operating simultaneously as DC (direct current) motor and DC generator26 Aug 2025US 12,401,258 B2
- Power generation system and method12 Feb 2019US 10,205,369 B2
- Electric machine24 Jul 2018US 10,033,321 B2Jaguar Land Rover Limited
- Power generation system and method11 Jul 2017US 9,705,389 B2
- Rotor device of integrated stater-generator motor and rotor working system16 May 2017US 9,653,959 B2Jing-Jin Electric Technologies Co., Ltd.
- Electromechanical transduction for energy storage compliant mechanisms8 Oct 2026US 2026/0312462 A1Brigham Young University
- Apparatus for operating simultaneously as dc (direct current) motor and dc generator17 Oct 2024US 2024/0348137 A1
- Power generation system and method29 Mar 2018US 2018/0091032 A1
- Method for winding a stator of a rotary electrical machine, and corresponding wound stator1 Feb 2018US 2018/0034351 A1Valeo Equipements Electriques Moteur
- Power generation system and method13 Apr 2017US 2017/0104400 A1
Most cited
By later US patents
- Starting and charging apparatus54US 5,818,115 ANippondenso Co., Ltd. · 1998
- Starter motor-alternator apparatus53US 4,219,739 ALear Avia Corporation · 1980
- Field compensated motor/generator21US 4,138,629 APlessey Handel und Investments AG · 1979
- Gas turbine with wired shaft forming part of a generator/motor assembly21US 8,278,774 B2Pratt & Whitney Canada Corp. · 2012
- Hybrid gas turbine engine starter-generator13US 7,078,826 B2Honeywell International Inc. · 2006