H02K 3/525
Annular coils
Official title: {Annular coils, e.g. for cores of the claw-pole type}
H02K3/525 (Annular coils) appears on 187 US grants and 175 published applications in this corpus.
Search patents in H02K- Granted patents
- 187
- Published applications
- 175
- Assignees
- 116
- Inventors
- 439
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 0 | 0 |
| 1993 | 6 | 0 |
| 1994 | 5 | 0 |
| 1995 | 4 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 5 | 0 |
| 2000 | 5 | 0 |
| 2001 | 2 | 2 |
| 2002 | 2 | 9 |
| 2003 | 5 | 3 |
| 2004 | 7 | 10 |
| 2005 | 10 | 4 |
| 2006 | 5 | 7 |
| 2007 | 2 | 6 |
| 2008 | 3 | 13 |
| 2009 | 1 | 3 |
| 2010 | 6 | 6 |
| 2011 | 4 | 3 |
| 2012 | 6 | 6 |
| 2013 | 5 | 8 |
| 2014 | 4 | 9 |
| 2015 | 2 | 3 |
| 2016 | 5 | 4 |
| 2017 | 6 | 2 |
| 2018 | 3 | 7 |
| 2019 | 4 | 8 |
| 2020 | 11 | 13 |
| 2021 | 4 | 8 |
| 2022 | 22 | 13 |
| 2023 | 8 | 8 |
| 2024 | 3 | 8 |
| 2025 | 7 | 4 |
| 2026 | 1 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Electric motor having snap connection assembly80US 6,232,687 B1General Electric Company · 2001
- Composite magnet brushless DC motor53US 5,440,185 A1995
- Connection terminal assembly for stator coil50US 4,720,646 AMitsubishi Denki Kabushiki Kaisha · 1988
- Magnetic encoder with composite magnet36US 5,313,159 A1994
- Electric motor having a molded housing and connector plates projected thereon34US 5,057,732 AAisan Kogyo Kabushiki Kaisha · 1991