H02K 21/225
Having i-shaped, e-shaped or similarly shaped armature cores
Official title: {having I-shaped, E-shaped or similarly shaped armature cores}
H02K21/225 (Having i-shaped, e-shaped or similarly shaped armature cores) appears on 26 US grants and 25 published applications in this corpus.
Search patents in H02K- Granted patents
- 26
- Published applications
- 25
- Assignees
- 23
- Inventors
- 58
- Latest grant
- 24 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 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 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 2 |
| 2003 | 0 | 0 |
| 2004 | 1 | 3 |
| 2005 | 1 | 0 |
| 2006 | 2 | 1 |
| 2007 | 0 | 1 |
| 2008 | 2 | 1 |
| 2009 | 1 | 2 |
| 2010 | 1 | 4 |
| 2011 | 1 | 0 |
| 2012 | 0 | 3 |
| 2013 | 0 | 1 |
| 2014 | 2 | 2 |
| 2015 | 0 | 0 |
| 2016 | 1 | 1 |
| 2017 | 1 | 1 |
| 2018 | 2 | 1 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 2 |
| 2022 | 0 | 0 |
| 2023 | 1 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Electric actuator24 Feb 2026US 12,562,630 B2Sonceboz Mechatronics Boncourt
- Internal stator of a rotary field machine having stator tooth groups each consisting of two directly adjacent teeth and a magnetic return7 Nov 2023US 11,811,266 B2Ipgate Capital Holding AG
- Fully integrated hybrid electric jet engine4 Jun 2019US 10,308,365 B2Codrin-Gruie (CG) Cantemir
- Single phase brushless motor23 Oct 2018US 10,110,102 B2Johnson Electric S. A.
- Segmented dual radial gap brushless PMDC motor/generator11 Sep 2018US 10,075,035 B2
- Electric actuator11 Nov 2021US 2021/0351682 A1Sonceboz Automotive SA
- Internal stator of a rotary field machine having stator tooth groups each consisting of two directly adjacent teeth and a magnetic return11 Feb 2021US 2021/0044160 A1Ipgate Capital Holding AG
- Fully Integrated Hybrid Electric Jet Engine10 May 2018US 2018/0127103 A1
- Segmented dual radial gap brushless pmdc motor/generator7 Sep 2017US 2017/0257005 A1
- Single phase brushless motor16 Jun 2016US 2016/0172948 A1Johnson Electric S. A.
Most cited
By later US patents
- Brushless direct-current motor of radial core type having a structure of double rotors and method for making the same67US 6,992,419 B2Amotech Co., Ltd. · 2006
- Multi-rotor synchronous machine permitting relative movement between rotors51US 6,998,757 B2Denso Corporation · 2006
- Brake device with a combination of power-generating and eddy-current magnetic resistance43US 6,084,325 A2000
- Permanent magnet excited transverse flux motor with outer rotor39US 7,626,308 B2Korea Electrotechnology Research Institute · 2009
- Brushless direct-current motor of radial core type having a structure of double rotors and method for making the same31US 7,356,906 B2Amotech Co., Ltd. · 2008