H02K 3/30
Windings characterised by the insulating material
H02K3/30 (Windings characterised by the insulating material) appears on 584 US grants and 769 published applications in this corpus.
Search patents in H02K- Granted patents
- 584
- Published applications
- 769
- Assignees
- 321
- Inventors
- 1,666
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 5 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 7 | 0 |
| 1982 | 4 | 0 |
| 1983 | 6 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 5 | 0 |
| 1998 | 2 | 0 |
| 1999 | 7 | 0 |
| 2000 | 9 | 0 |
| 2001 | 11 | 3 |
| 2002 | 8 | 13 |
| 2003 | 2 | 5 |
| 2004 | 10 | 15 |
| 2005 | 4 | 15 |
| 2006 | 6 | 8 |
| 2007 | 9 | 10 |
| 2008 | 4 | 12 |
| 2009 | 7 | 7 |
| 2010 | 6 | 12 |
| 2011 | 3 | 8 |
| 2012 | 6 | 18 |
| 2013 | 8 | 26 |
| 2014 | 20 | 38 |
| 2015 | 11 | 59 |
| 2016 | 15 | 41 |
| 2017 | 36 | 53 |
| 2018 | 36 | 55 |
| 2019 | 60 | 62 |
| 2020 | 47 | 65 |
| 2021 | 39 | 51 |
| 2022 | 39 | 39 |
| 2023 | 29 | 37 |
| 2024 | 39 | 49 |
| 2025 | 36 | 40 |
| 2026 | 25 | 28 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Edge sealed slot liner6 Oct 2026US 12,756,255 B23M Innovative Properties Company
- Tooling for encapsulated ESP stators6 Oct 2026US 12,756,256 B2Schlumberger Technology Corporation
- Armature and driving device29 Sep 2026US 12,749,939 B2Sumitomo Heavy Industries, Ltd.
- Electrical machine having stator sleeve8 Sep 2026US 12,732,050 B2ROLLS-ROYCE plc
- Thermosetting resin composition and stator8 Sep 2026US 12,732,051 B2Sumitomo Bakelite Co., Ltd.
- Epoxy resin composition particle, tablet, and method for producing columnar tablet1 Oct 2026US 2026/0297243 A1Sumitomo Bakelite Co., Ltd.
- Core sleeve arrangement for an axial flux machine24 Sep 2026US 2026/0291304 A1Magnax BV
- Electric machine having film-like insulation made of a thermoplastic material24 Sep 2026US 2026/0291317 A1Schaeffler Technologies AG & Co. KG
- An air-core-stator electric machine with superconducting circuits and shielding3 Sep 2026US 2026/0261190 A1Air Force Research Laboratory
- Asymmetric wire insulation for traction motor stators27 Aug 2026US 2026/0254304 A1Ford Global Technologies, LLC
Most cited
By later US patents
- Coil for arrangement in slots in a stator or rotor of an electrical machine74US 4,806,806 AASEA Aktiebolag · 1989
- Dynamoelectric machine having coil windings and core encapsulated with resin-filler composition68US 4,128,527 AHitachi, Ltd. · 1978
- Pulsed voltage surge resistant magnet wire58US 5,654,095 APhelps Dodge Industries, Inc. · 1997
- Electrical insulating material and stator bar formed therewith58US 6,359,232 B1General Electric Company · 2002
- Thermosetting resin composition, electrically insulated coil, electric rotating machine and method for producing same52US 5,982,056 AHitachi, Ltd. · 1999