H02K 1/20
With channels or ducts for flow of cooling medium
Official title: with channels or ducts for flow of cooling medium
H02K1/20 (With channels or ducts for flow of cooling medium) appears on 948 US grants and 1,353 published applications in this corpus.
Search patents in H02K- Granted patents
- 948
- Published applications
- 1,353
- Assignees
- 506
- Inventors
- 2,694
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 4 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 5 | 0 |
| 1981 | 0 | 0 |
| 1982 | 4 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 5 | 0 |
| 1998 | 2 | 0 |
| 1999 | 8 | 0 |
| 2000 | 5 | 0 |
| 2001 | 10 | 3 |
| 2002 | 11 | 10 |
| 2003 | 8 | 9 |
| 2004 | 12 | 16 |
| 2005 | 9 | 8 |
| 2006 | 5 | 14 |
| 2007 | 9 | 17 |
| 2008 | 7 | 18 |
| 2009 | 9 | 22 |
| 2010 | 18 | 25 |
| 2011 | 18 | 37 |
| 2012 | 18 | 42 |
| 2013 | 25 | 35 |
| 2014 | 25 | 42 |
| 2015 | 24 | 30 |
| 2016 | 20 | 42 |
| 2017 | 36 | 53 |
| 2018 | 33 | 51 |
| 2019 | 41 | 79 |
| 2020 | 54 | 97 |
| 2021 | 70 | 101 |
| 2022 | 85 | 128 |
| 2023 | 66 | 118 |
| 2024 | 102 | 129 |
| 2025 | 101 | 115 |
| 2026 | 72 | 112 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Rotating electrical machine6 Oct 2026US 12,756,254 B2Honda Motor Co., Ltd.
- Stator for an electric machine of a motor vehicle having a cooling duct in a laminated core22 Sep 2026US 12,744,418 B2Bayerische Motoren Werke Aktiengesellschaft
- Electric machine with a closed coolant circuit, in particular for driving a vehicle22 Sep 2026US 12,744,425 B2Valeo eAutomotive Germany GmbH
- In-wheel motor with improved heat dissipation15 Sep 2026US 12,738,779 B2Tidnab Innovations Inc.
- Rotating electric machine15 Sep 2026US 12,738,780 B2Hitachi Astemo, Ltd.
- Pod drive8 Oct 2026US 2026/0307770 A1Hd Hyundai Electric Co., Ltd.
- Axial flow machine having a stator and optimized cooling of the pole shoes8 Oct 2026US 2026/0312443 A1Schaeffler Technologies AG & Co. KG
- End-Face Stator Lamination for a Stator Body of a Stator of an Electric Machine1 Oct 2026US 2026/0302849 A1Bayerische Motoren Werke Aktiengesellschaft
- Stator Body with Axial Coolant Channels1 Oct 2026US 2026/0302850 A1Bayerische Motoren Werke Aktiengesellschaft
- System and method for thermal management of electronic machines using coolant cans1 Oct 2026US 2026/0302862 A1Tau Motors, Inc.
Most cited
By later US patents
- Motor with cooling structure115US 6,114,784 ANissan Motor Co., Ltd. · 2000
- Apparatus for containment and cooling of a core within a housing86US 5,331,238 ASundstrand Corporation · 1994
- Liquid-cooled motor71US 4,745,314 AFanuc Corporation · 1988
- Lamination for a dynamoelectric machine with improved cooling capacity66US 5,365,132 AGeneral Electric Company · 1994
- Stator core cooling for dynamoelectric machines58US 4,208,597 AWestinghouse Electric Corp. · 1980