H02K 47/02
Ac/dc converters or vice versa
Official title: AC/DC converters or vice versa
H02K47/02 (Ac/dc converters or vice versa) appears on 60 US grants and 73 published applications in this corpus.
Search patents in H02K- Granted patents
- 60
- Published applications
- 73
- Assignees
- 36
- Inventors
- 140
- 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 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 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 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 3 |
| 2011 | 1 | 2 |
| 2012 | 1 | 4 |
| 2013 | 0 | 2 |
| 2014 | 4 | 4 |
| 2015 | 1 | 4 |
| 2016 | 3 | 3 |
| 2017 | 2 | 2 |
| 2018 | 2 | 5 |
| 2019 | 4 | 5 |
| 2020 | 6 | 16 |
| 2021 | 9 | 7 |
| 2022 | 6 | 2 |
| 2023 | 3 | 3 |
| 2024 | 1 | 1 |
| 2025 | 4 | 6 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Systems and methods of wheel based power generation for electronic components on retail carts4 Aug 2026US 12,698,021 B1Walmart Apollo, LLC
- Electric compressor19 May 2026US 12,633,796 B2Hanon Systems
- Motor-alternator-motor (MAM) systems and methods for using same30 Dec 2025US 12,512,743 B2
- Planar drive system29 Apr 2025US 12,289,022 B2Beckhoff Automation GmbH
- Mechanical device for converting direct current into alternating current25 Mar 2025US 12,261,499 B2Siemens Aktiengesellschaft
- 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
- Electric compressor20 Nov 2025US 2025/0357817 A1Hanon Systems
- Biased molten metal circuits13 Nov 2025US 2025/0350180 A1Brilliant Light Power, Inc.
- Electrical power system9 Oct 2025US 2025/0316978 A1ROLLS-ROYCE plc
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
- Controllable electrical single-armature of rotary converter10US 4,238,822 A1980
- Biased unitized motor alternator with stationary armature and field9US 4,567,407 A1986