H01F 1/20
In the form of particles
Official title: in the form of particles, e.g. powder (H01F1/147 takes precedence)
H01F1/20 (In the form of particles) appears on 1,062 US grants and 1,479 published applications in this corpus.
Search patents in H01F- Granted patents
- 1,062
- Published applications
- 1,479
- Assignees
- 418
- Inventors
- 2,408
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 7 | 0 |
| 1980 | 6 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 5 | 0 |
| 1987 | 2 | 0 |
| 1988 | 4 | 0 |
| 1989 | 7 | 0 |
| 1990 | 10 | 0 |
| 1991 | 9 | 0 |
| 1992 | 4 | 0 |
| 1993 | 12 | 0 |
| 1994 | 9 | 0 |
| 1995 | 3 | 0 |
| 1996 | 7 | 0 |
| 1997 | 9 | 0 |
| 1998 | 11 | 0 |
| 1999 | 9 | 0 |
| 2000 | 21 | 0 |
| 2001 | 16 | 4 |
| 2002 | 16 | 17 |
| 2003 | 21 | 23 |
| 2004 | 18 | 27 |
| 2005 | 12 | 24 |
| 2006 | 11 | 23 |
| 2007 | 11 | 32 |
| 2008 | 13 | 39 |
| 2009 | 16 | 35 |
| 2010 | 16 | 45 |
| 2011 | 18 | 40 |
| 2012 | 26 | 45 |
| 2013 | 28 | 48 |
| 2014 | 27 | 53 |
| 2015 | 25 | 55 |
| 2016 | 28 | 52 |
| 2017 | 34 | 64 |
| 2018 | 33 | 81 |
| 2019 | 58 | 88 |
| 2020 | 63 | 102 |
| 2021 | 52 | 124 |
| 2022 | 47 | 116 |
| 2023 | 107 | 124 |
| 2024 | 107 | 88 |
| 2025 | 63 | 66 |
| 2026 | 45 | 64 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Soft magnetic alloy powder and production method therefor6 Oct 2026US 12,753,473 B2Mitsubishi Steel Mfg. Co., Ltd.
- Soft magnetic material, method for producing soft magnetic material, and electric motor1 Sep 2026US 12,723,294 B2Hitachi, Ltd.
- Inductor component18 Aug 2026US 12,712,119 B2Murata Manufacturing Co., Ltd.
- Composition including reflective particles4 Aug 2026US 12,698,399 B2Viavi Solutions Inc.
- High frequency low loss magnetic core and method of manufacture4 Aug 2026US 12,700,529 B2Powdermet, Inc.
- Magnetic composition, magnetic film, stack, and circuit member8 Oct 2026US 2026/0311918 A1
- Magnetic paste, circuit member, and method for manufacturing circuit member8 Oct 2026US 2026/0311919 A1
- Method of manufacturing a coil component1 Oct 2026US 2026/0295668 A1Murata Manufacturing Co., Ltd.
- Magnetic composition, magnetic film, stack, and circuit member1 Oct 2026US 2026/0297291 A1
- Magnetic Beads1 Oct 2026US 2026/0302016 A1Seiko Epson Corporation
Most cited
By later US patents
- Ferromagnetic powder for dust core300US 7,498,080 B2Foxconn Technology Co., Ltd. · 2009
- Coated magnetizable microparticles, reversible suspensions thereof, and processes relating thereto97US 4,454,234 A1984
- Doubly-coated iron particles84US 5,063,011 AHoeganaes Corporation · 1991
- Flux concentrator and method of making a magnetic flux concentrator79US 8,692,639 B2Access Business Group International LLC · 2014
- Powder having multilayered film on its surface and process for preparing the same73US 5,985,466 ANittetsu Mining Co., Ltd. · 1999