H02K 19/04
For single-phase current
Official title: for single-phase current
H02K19/04 (For single-phase current) appears on 115 US grants and 105 published applications in this corpus.
Search patents in H02K- Granted patents
- 115
- Published applications
- 105
- Assignees
- 99
- Inventors
- 272
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 5 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 0 |
| 2002 | 2 | 2 |
| 2003 | 2 | 0 |
| 2004 | 1 | 1 |
| 2005 | 3 | 3 |
| 2006 | 1 | 4 |
| 2007 | 2 | 4 |
| 2008 | 3 | 2 |
| 2009 | 1 | 1 |
| 2010 | 0 | 4 |
| 2011 | 1 | 6 |
| 2012 | 3 | 4 |
| 2013 | 2 | 3 |
| 2014 | 2 | 7 |
| 2015 | 4 | 3 |
| 2016 | 0 | 7 |
| 2017 | 2 | 18 |
| 2018 | 4 | 8 |
| 2019 | 12 | 5 |
| 2020 | 7 | 8 |
| 2021 | 9 | 2 |
| 2022 | 4 | 8 |
| 2023 | 0 | 1 |
| 2024 | 5 | 2 |
| 2025 | 1 | 0 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Synchronous reluctance motor with magnetic flux barriers24 Mar 2026US 12,587,049 B2
- Single-phase permanent magnet synchronous motor and dust collector21 Jan 2025US 12,206,287 B2Gree Electric Appliances, Inc. of Zhuhai
- Rotor for switch reluctance electrical motor with teeth having irregular cross-sectional profile12 Nov 2024US 12,142,973 B1Monumo Limited
- Method for operating an electric machine and electric machines12 Nov 2024US 12,142,978 B2
- Motor and control device therefor5 Mar 2024US 11,923,727 B2
- Electromagnetic reaction wheel13 Aug 2026US 2026/0238101 A1National Tsing Hua University
- Switched reluctance motor comprising permanent magnets14 May 2026US 2026/0135453 A1
- Synchronous reluctance motor28 Nov 2024US 2024/0396389 A1Nidec Corporation
- Switched reluctance motor with several single-phase slices9 May 2024US 2024/0154557 A1Chara Technologies Private Limited
- Segmented stator13 Apr 2023US 2023/0116266 A1ROLLS-ROYCE plc
Most cited
By later US patents
- High performance axial gap alternator motor68US 6,750,588 B12004
- Stator arrangement for small motors56US 4,381,465 ASiemens Aktiengesellschaft · 1983
- D. C. motor with multi-tooth poles48US 4,748,362 AEMS Electronic Motor Systems AB · 1988
- Auxiliary starting switched reluctance motor47US 5,844,343 AEmerson Electric Co. · 1998
- Switched reluctance motor having stator inserts for noise reduction, magnet positioning, and coil retention43US 6,232,693 B1Emerson Electric Co. · 2001