H02K 3/28
Layout of windings or of connections between windings
Official title: Layout of windings or of connections between windings (windings for pole-changing H02K17/06, H02K17/14, H02K19/12, H02K19/32)
H02K3/28 (Layout of windings or of connections between windings) appears on 2,923 US grants and 3,438 published applications in this corpus.
Search patents in H02K- Granted patents
- 2,923
- Published applications
- 3,438
- Assignees
- 1,002
- Inventors
- 5,465
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 5 | 0 |
| 1978 | 6 | 0 |
| 1979 | 6 | 0 |
| 1980 | 4 | 0 |
| 1981 | 7 | 0 |
| 1982 | 7 | 0 |
| 1983 | 6 | 0 |
| 1984 | 6 | 0 |
| 1985 | 8 | 0 |
| 1986 | 4 | 0 |
| 1987 | 5 | 0 |
| 1988 | 5 | 0 |
| 1989 | 10 | 0 |
| 1990 | 5 | 0 |
| 1991 | 8 | 0 |
| 1992 | 6 | 0 |
| 1993 | 9 | 0 |
| 1994 | 10 | 0 |
| 1995 | 16 | 0 |
| 1996 | 16 | 0 |
| 1997 | 21 | 0 |
| 1998 | 30 | 0 |
| 1999 | 51 | 0 |
| 2000 | 29 | 0 |
| 2001 | 31 | 12 |
| 2002 | 48 | 70 |
| 2003 | 27 | 37 |
| 2004 | 44 | 48 |
| 2005 | 54 | 56 |
| 2006 | 38 | 47 |
| 2007 | 31 | 51 |
| 2008 | 28 | 51 |
| 2009 | 34 | 55 |
| 2010 | 50 | 88 |
| 2011 | 49 | 97 |
| 2012 | 56 | 69 |
| 2013 | 76 | 95 |
| 2014 | 67 | 145 |
| 2015 | 56 | 159 |
| 2016 | 94 | 203 |
| 2017 | 160 | 198 |
| 2018 | 163 | 208 |
| 2019 | 217 | 196 |
| 2020 | 195 | 261 |
| 2021 | 184 | 259 |
| 2022 | 211 | 309 |
| 2023 | 180 | 213 |
| 2024 | 235 | 205 |
| 2025 | 201 | 174 |
| 2026 | 108 | 132 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
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