H02K 23/36
Having two or more windings
Official title: having two or more windings; having two or more commutators; having two or more stators
H02K23/36 (Having two or more windings) appears on 63 US grants and 42 published applications in this corpus.
Search patents in H02K- Granted patents
- 63
- Published applications
- 42
- Assignees
- 36
- Inventors
- 117
- Latest grant
- 26 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 5 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 2 |
| 2003 | 0 | 4 |
| 2004 | 3 | 1 |
| 2005 | 0 | 2 |
| 2006 | 2 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 2 | 3 |
| 2010 | 2 | 1 |
| 2011 | 1 | 3 |
| 2012 | 1 | 1 |
| 2013 | 2 | 5 |
| 2014 | 2 | 2 |
| 2015 | 3 | 3 |
| 2016 | 4 | 5 |
| 2017 | 3 | 3 |
| 2018 | 4 | 0 |
| 2019 | 2 | 3 |
| 2020 | 2 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- Dual armature single field DC motor/generator26 Aug 2025US 12,401,257 B1Wilborn, LLC
- Feedforward control of multiphase permanent magnet direct current motor drives4 Jan 2022US 11,218,096 B2Steering Solutions IP Holding Corporation
- Electric drive apparatus, chopper, DC motor, and electric device14 Apr 2020US 10,622,876 B2University of Shanghai for Science and Technology
- Double-stator rotating electric machine10 Mar 2020US 10,587,175 B2Denso Corporation
- Armature, method for winding armature coil, and DC motor16 Jul 2019US 10,355,571 B2Denso Corporation
- Synchronous electric machine for aircraft, associated propulsion device, turboshaft engine and method30 Oct 2025US 2025/0337306 A1Safran Helicopter Engines
- Electric motor with electrical generation capacity18 Sep 2025US 2025/0293576 A1
- Feedforward control of multiphase permanent magnet direct current motor drives3 Jun 2021US 2021/0167703 A1Steering Solutions IP Holding Corporation
- Electric drive apparatus, chopper, dc motor, and electric device17 Oct 2019US 2019/0319523 A1University of Shanghai for Science and Technology
- Electrical amplification systems through resonance8 Aug 2019US 2019/0245409 A1Vital-Tech Ltd.
Most cited
By later US patents
- DC motor with dual commutator bar set and selectable series and parallel connected coils1,444US 7,893,586 B2Black & Decker Inc. · 2011
- Methods and apparatus for increasing power of permanent magnet motors1,432US 6,777,838 B22004
- Portable motor powered device64US 6,683,396 B2Matsushita Electric Works, Ltd. · 2004
- Angle grinder61US 7,537,065 B2Black & Decker Inc. · 2009
- Electric motor providing multi-directional output57US 5,907,199 AUT Automotive Dearborn, Inc. · 1999