H01F 27/2809
On stacked layers
Official title: {on stacked layers}
H01F27/2809 (On stacked layers) appears on 1,644 US grants and 2,231 published applications in this corpus.
Search patents in H01F- Granted patents
- 1,644
- Published applications
- 2,231
- Assignees
- 479
- Inventors
- 3,231
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 3 | 0 |
| 2002 | 2 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 2 |
| 2006 | 0 | 0 |
| 2007 | 3 | 4 |
| 2008 | 4 | 9 |
| 2009 | 2 | 11 |
| 2010 | 7 | 13 |
| 2011 | 11 | 11 |
| 2012 | 12 | 23 |
| 2013 | 15 | 48 |
| 2014 | 34 | 74 |
| 2015 | 41 | 121 |
| 2016 | 82 | 119 |
| 2017 | 94 | 194 |
| 2018 | 114 | 162 |
| 2019 | 142 | 254 |
| 2020 | 149 | 217 |
| 2021 | 148 | 196 |
| 2022 | 182 | 203 |
| 2023 | 171 | 165 |
| 2024 | 190 | 152 |
| 2025 | 143 | 137 |
| 2026 | 76 | 115 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Integrated-magnetic apparatus210US 5,726,615 A1998
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