H02K 19/38
Structural association of synchronous generators with exciting machines
H02K19/38 (Structural association of synchronous generators with exciting machines) appears on 134 US grants and 115 published applications in this corpus.
Search patents in H02K- Granted patents
- 134
- Published applications
- 115
- Assignees
- 59
- Inventors
- 252
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 6 | 0 |
| 1991 | 5 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 2 |
| 2004 | 2 | 5 |
| 2005 | 1 | 3 |
| 2006 | 3 | 8 |
| 2007 | 1 | 4 |
| 2008 | 1 | 6 |
| 2009 | 4 | 5 |
| 2010 | 4 | 7 |
| 2011 | 8 | 9 |
| 2012 | 8 | 3 |
| 2013 | 3 | 4 |
| 2014 | 4 | 6 |
| 2015 | 3 | 4 |
| 2016 | 3 | 10 |
| 2017 | 5 | 4 |
| 2018 | 4 | 3 |
| 2019 | 6 | 5 |
| 2020 | 8 | 5 |
| 2021 | 3 | 4 |
| 2022 | 4 | 5 |
| 2023 | 4 | 4 |
| 2024 | 4 | 5 |
| 2025 | 5 | 3 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Synthetic generator synchronization6 Oct 2026US 12,756,339 B2Google Inc.
- Rectifier assemblies10 Feb 2026US 12,549,075 B2Hamilton Sundstrand Corporation
- Replacement or repair of generator neutral ring30 Dec 2025US 12,512,736 B2Electromechanical Engineering Associates, Inc.
- Architecture for an electric power generator for aviation17 Jun 2025US 12,334,785 B2The Boeing Company
- Wet and dry cavity generator systems and methods of manufacturing the same13 May 2025US 12,301,063 B2GE Aviation Systems LLC
- Drive axle for an electric vehicle24 Sep 2026US 2026/0291338 A1ZF Friedrichshafen AG
- Synthetic generator synchronization7 Aug 2025US 2025/0253786 A1Google Inc.
- Rectifier assemblies13 Feb 2025US 2025/0055352 A1Hamilton Sundstrand Corporation
- Replacement or repair of generator neutral ring6 Feb 2025US 2025/0047182 A1Electromechanical Engineering Associates, Inc.
- Power electronic arrangement for an externally excited synchronous machine, motor vehicle and method for producing a power electronic arrangement18 Jul 2024US 2024/0244806 A1
Most cited
By later US patents
- Polyphase brushless DC and AC synchronous machines223US 5,334,899 A1994
- Variable speed constant frequency synchronous electric power generating system and method of using same65US 5,418,446 A1995
- Self-compensating brushless alternator55US 4,887,020 AU. S. Philips Corporation · 1989
- Permanent magnet generator apparatus including a consequent pole rotor54US 4,777,397 AMarathon Electric Manufacturing Corporation · 1988
- Brushless synchronous generator system48US 4,121,148 ADipl.-Ing. Hitzinger & Co. · 1978