H02K 47/04
Motor/generators
H02K47/04 (Motor/generators) appears on 39 US grants and 50 published applications in this corpus.
Search patents in H02K- Granted patents
- 39
- Published applications
- 50
- Assignees
- 21
- Inventors
- 95
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 2 |
| 2011 | 0 | 2 |
| 2012 | 1 | 4 |
| 2013 | 0 | 2 |
| 2014 | 4 | 2 |
| 2015 | 0 | 3 |
| 2016 | 3 | 2 |
| 2017 | 1 | 1 |
| 2018 | 0 | 4 |
| 2019 | 4 | 3 |
| 2020 | 5 | 12 |
| 2021 | 4 | 2 |
| 2022 | 3 | 2 |
| 2023 | 2 | 2 |
| 2024 | 1 | 0 |
| 2025 | 2 | 4 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Systems and methods of wheel based power generation for electronic components on retail carts4 Aug 2026US 12,698,021 B1Walmart Apollo, LLC
- Planar drive system29 Apr 2025US 12,289,022 B2Beckhoff Automation GmbH
- Power conversion apparatus7 Jan 2025US 12,191,739 B2Denso Corporation
- Rectifier2 Jul 2024US 12,027,940 B2ROLLS-ROYCE plc
- Hybrid electric propulsion system and method of operation12 Sep 2023US 11,757,386 B2Pratt & Whitney Canada Corp.
- Systems and methods of wheel based power generation for electronic components on retail carts6 Aug 2026US 2026/0225635 A1Walmart Apollo, LLC
- Micro-Combined Heat and Power System and Method of Use12 Feb 2026US 2026/0045855 A1Axiom Energy Group, LLC
- Electrical power system9 Oct 2025US 2025/0316978 A1ROLLS-ROYCE plc
- Hybrid electric aircraft propulsion system and method18 Sep 2025US 2025/0293627 A1Pratt & Whitney Canada Corp.
- Power conversion apparatus20 Mar 2025US 2025/0096664 A1Denso Corporation
Most cited
By later US patents
- Electric dynamotor29US 4,237,395 A1980
- Solar power take off18US 4,718,233 A1988
- AC and DC motor-generator set having stators with annular end plate water cooling channels15US 5,592,039 AWestinghouse Electric Corp. · 1997
- Biased unitized motor alternator with stationary armature and field9US 4,567,407 A1986
- Internally-located rotating union for a motor-generator set7US 5,149,141 AWestinghouse Electric Corp. · 1992