H02K 17/20
Having deep-bar rotors
Official title: having deep-bar rotors
H02K17/20 (Having deep-bar rotors) appears on 243 US grants and 268 published applications in this corpus.
Search patents in H02K- Granted patents
- 243
- Published applications
- 268
- Assignees
- 129
- Inventors
- 562
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 4 | 0 |
| 1996 | 5 | 0 |
| 1997 | 6 | 0 |
| 1998 | 7 | 0 |
| 1999 | 9 | 0 |
| 2000 | 4 | 0 |
| 2001 | 6 | 1 |
| 2002 | 0 | 2 |
| 2003 | 2 | 6 |
| 2004 | 2 | 4 |
| 2005 | 4 | 3 |
| 2006 | 3 | 2 |
| 2007 | 1 | 9 |
| 2008 | 2 | 4 |
| 2009 | 0 | 5 |
| 2010 | 5 | 5 |
| 2011 | 2 | 14 |
| 2012 | 3 | 17 |
| 2013 | 14 | 20 |
| 2014 | 15 | 19 |
| 2015 | 12 | 17 |
| 2016 | 7 | 11 |
| 2017 | 9 | 12 |
| 2018 | 12 | 19 |
| 2019 | 13 | 18 |
| 2020 | 19 | 19 |
| 2021 | 23 | 17 |
| 2022 | 10 | 13 |
| 2023 | 7 | 7 |
| 2024 | 9 | 8 |
| 2025 | 9 | 10 |
| 2026 | 4 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Electric motor having rotor and squirrel cage winding22 Sep 2026US 12,744,438 B2Sew-Eurodrive GmbH & Co. KG
- Rotor for rotary electric machine, manufacturing method and corresponding rotary electric machines5 May 2026US 12,620,852 B2Weg Equipamentos EléTricos S.A.
- Induction rotor assembly with thin foils7 Apr 2026US 12,597,836 B2GM Global Technology Operations LLC
- Electric motor rotor including end ring restrainer3 Mar 2026US 12,567,787 B2Schaeffler Technologies AG & Co. KG
- Induction motor25 Nov 2025US 12,483,086 B2Entuple E-Mobility Pvt. Ltd.
- Improvements relating to cooling of electric machines8 Oct 2026US 2026/0312450 A1Vestas Wind Systems A/S
- Rotor, rotor core, induction motor, and method of designing induction motor9 Jul 2026US 2026/0196908 A1Nippon Steel Corporation
- Induction motor including rotor having end segment protrusions28 May 2026US 2026/0149347 A1Schaeffler Technologies AG & Co. KG
- Induction machine having optimized rotor and direct cooling5 Feb 2026US 2026/0039163 A1Fca US LLC
- Induction machine rotor and method of making29 Jan 2026US 2026/0031692 A1Fca US LLC
Most cited
By later US patents
- Method and apparatus for transducerless position and velocity estimation in drives for AC machines138US 5,585,709 AWisconsin Alumni Research Foundation · 1996
- Method and apparatus for transducerless position and velocity estimation in drives for AC machines124US 5,565,752 AWisconsin Alumni Research Foundation · 1996
- Method and apparatus for transducerless flux estimation in drives for induction machines57US 5,559,419 AWisconsin Alumni Research Foundation · 1996
- Line start permanent magnet motor56US 5,952,757 AGeneral Electric Company · 1999
- Electric vehicle motor47US 5,682,074 ANorthrop Grumman Corporation · 1997