H02K 55/02
Dynamo-electric machines having windings operating at cryogenic temperatures: of the synchronous type
Official title: of the synchronous type
H02K55/02 (Dynamo-electric machines having windings operating at cryogenic temperatures: of the synchronous type) appears on 502 US grants and 390 published applications in this corpus.
Search patents in H02K- Granted patents
- 502
- Published applications
- 390
- Assignees
- 164
- Inventors
- 711
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 18 | 0 |
| 1978 | 14 | 0 |
| 1979 | 12 | 0 |
| 1980 | 20 | 0 |
| 1981 | 25 | 0 |
| 1982 | 19 | 0 |
| 1983 | 10 | 0 |
| 1984 | 17 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 5 | 0 |
| 1988 | 8 | 0 |
| 1989 | 9 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 4 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 1 |
| 2002 | 10 | 23 |
| 2003 | 18 | 16 |
| 2004 | 26 | 21 |
| 2005 | 10 | 15 |
| 2006 | 13 | 9 |
| 2007 | 8 | 12 |
| 2008 | 11 | 19 |
| 2009 | 11 | 13 |
| 2010 | 15 | 28 |
| 2011 | 18 | 16 |
| 2012 | 15 | 22 |
| 2013 | 8 | 16 |
| 2014 | 13 | 19 |
| 2015 | 11 | 11 |
| 2016 | 11 | 9 |
| 2017 | 14 | 9 |
| 2018 | 6 | 10 |
| 2019 | 9 | 10 |
| 2020 | 9 | 15 |
| 2021 | 13 | 18 |
| 2022 | 14 | 10 |
| 2023 | 5 | 12 |
| 2024 | 10 | 25 |
| 2025 | 16 | 14 |
| 2026 | 7 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
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- Controller for an electrical power supply circuit of a superconducting motor, superconducting electrical power supply system for a motor, and aircraft comprising such a system24 Mar 2026US 12,587,005 B2Airbus SAS
- Cooling system for superconducting wind power generator17 Mar 2026US 12,580,449 B2Commonwealth Fusion Systems LLC
- Superconducting ultra power efficient radial fan augmented nano-aerodrive (superfan)1 Oct 2026US 2026/0298178 A1Sonic Blue Aerospace, Inc.
- Low-loss superconducting motor and design method thereof17 Sep 2026US 2026/0280401 A1Hunan University
- An air-core-stator electric machine with superconducting circuits and shielding3 Sep 2026US 2026/0261190 A1Air Force Research Laboratory
- Superconductive magnet assembly, planar motor and lithographic apparatus3 Sep 2026US 2026/0261191 A1ASML Netherlands B. V.
- Superconducting motors and components thereof20 Aug 2026US 2026/0246355 A1Electric Mayhem, LLC
Most cited
By later US patents
- Support structure for dynamoelectric machine stators spiral pancake winding101US 4,292,558 AWestinghouse Electric Corp. · 1981
- Concentric tilted double-helix dipoles and higher-order multipole magnets73US 6,921,042 B12005
- Rotating machine having superconducting windings72US 6,066,906 AAmerican Superconductor Corporation · 2000
- Air-gap winding stator construction for dynamoelectric machine68US 4,330,726 AGeneral Electric Company · 1982
- .DELTA.-Connected, two-layer, three-phase winding for an electrical machine57US 4,200,817 ABBC Brown, Boveri & Company, Limited · 1980