H02K 51/00
Dynamo-electric gears, i.e. dynamo-electric means for transmitting mechanical power from a driving
Official title: Dynamo-electric gears, i.e. dynamo-electric means for transmitting mechanical power from a driving shaft to a driven shaft and comprising structurally interrelated motor and generator parts
H02K51/00 (Dynamo-electric gears, i.e. dynamo-electric means for transmitting mechanical power from a driving) appears on 234 US grants and 239 published applications in this corpus.
Search patents in H02K- Granted patents
- 234
- Published applications
- 239
- Assignees
- 131
- Inventors
- 475
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 7 | 0 |
| 1999 | 10 | 0 |
| 2000 | 9 | 0 |
| 2001 | 7 | 1 |
| 2002 | 8 | 3 |
| 2003 | 1 | 7 |
| 2004 | 8 | 11 |
| 2005 | 6 | 6 |
| 2006 | 6 | 3 |
| 2007 | 5 | 7 |
| 2008 | 3 | 3 |
| 2009 | 4 | 13 |
| 2010 | 4 | 11 |
| 2011 | 5 | 17 |
| 2012 | 12 | 16 |
| 2013 | 11 | 14 |
| 2014 | 8 | 12 |
| 2015 | 16 | 7 |
| 2016 | 11 | 8 |
| 2017 | 10 | 18 |
| 2018 | 7 | 14 |
| 2019 | 12 | 11 |
| 2020 | 13 | 20 |
| 2021 | 12 | 8 |
| 2022 | 9 | 7 |
| 2023 | 8 | 4 |
| 2024 | 4 | 7 |
| 2025 | 2 | 4 |
| 2026 | 4 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Magnetic gear systems, methods, and apparatuses18 Aug 2026US 12,712,423 B2Board of Regents, The University of Texas System
- Magnetic geared electrical machine, power generation system, and drive system21 Apr 2026US 12,609,594 B2Mitsubishi Heavy Industries, Ltd.
- Electromagnetically-controlled magnetic cycloidal gear assembly for achieving enhanced torque capacity and method of operating same17 Mar 2026US 12,580,448 B2Kaney Aerospace, Inc.
- Magnetic flux modulated type magnetic gear3 Mar 2026US 12,567,790 B2Mitsubishi Electric Corporation
- Axial flux motor powered air cycle machine5 Aug 2025US 12,378,895 B2Hamilton Sundstrand Corporation
- Magnetic energy controlled power generating system17 Sep 2026US 2026/0280400 A1
- Hydrokinetic turbine system27 Aug 2026US 2026/0251114 A1Emrgy Inc.
- Magnetic gear20 Aug 2026US 2026/0246354 A1Mitsubishi Electric Corporation
- Magnetic reducer30 Jul 2026US 2026/0221857 A1AIMertech Co., Ltd.
- Power transmission device4 Jun 2026US 2026/0153163 A1Denso Corporation
Most cited
By later US patents
- Vehicle transmission system with variable speed drive235US 5,508,574 A1996
- Controller for hybrid vehicle114US 6,018,694 ADenso Corporation · 2000
- Hybrid drive system wherein planetary gear mechanism is disposed radially inwardly of stator coil of motor/generator107US 6,155,364 AToyota Jidosha Kabushiki Kaisha · 2000
- Hybrid powertrain100US 6,740,002 B1Stridsberg Innovation AB · 2004
- Compact electrical machine97US 6,794,781 B2ROLLS-ROYCE plc · 2004