H01F 7/0257
Lifting, pick-up magnetic objects
Official title: {Lifting, pick-up magnetic objects}
H01F7/0257 (Lifting, pick-up magnetic objects) appears on 117 US grants and 124 published applications in this corpus.
Search patents in H01F- Granted patents
- 117
- Published applications
- 124
- Assignees
- 64
- Inventors
- 197
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 2 |
| 2003 | 1 | 1 |
| 2004 | 3 | 1 |
| 2005 | 0 | 1 |
| 2006 | 2 | 3 |
| 2007 | 1 | 1 |
| 2008 | 2 | 2 |
| 2009 | 1 | 1 |
| 2010 | 1 | 1 |
| 2011 | 0 | 2 |
| 2012 | 0 | 2 |
| 2013 | 3 | 5 |
| 2014 | 2 | 5 |
| 2015 | 4 | 7 |
| 2016 | 4 | 8 |
| 2017 | 8 | 8 |
| 2018 | 5 | 9 |
| 2019 | 4 | 3 |
| 2020 | 3 | 4 |
| 2021 | 5 | 15 |
| 2022 | 7 | 7 |
| 2023 | 12 | 10 |
| 2024 | 12 | 15 |
| 2025 | 9 | 4 |
| 2026 | 5 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Switchable magnetic apparatus with reduced switching force and methods thereof11 Aug 2026US 12,706,236 B2Lantha Tech Ltd.
- Magnetic cleaning device14 Apr 2026US 12,600,026 B2
- Variable field magnetic couplers and methods for engaging a ferromagnetic workpiece17 Mar 2026US 12,580,142 B2Magswitch Automation Company
- Magnetic coupling device with at least one of a sensor arrangement and a degauss capability17 Feb 2026US 12,551,988 B2Magswitch Automation Company
- Gravity clean-off magnetic sweeper apparatus10 Feb 2026US 12,546,072 B2Bluestreak Equipment Inc.
- Device and system for retrieving firearm shells1 Oct 2026US 2026/0302029 A1
- Variable field magnetic couplers and methods for engaging a ferromagnetic workpiece27 Aug 2026US 2026/0253824 A1Magswitch Automation Company
- Battery Gripper27 Aug 2026US 2026/0254034 A1LG Energy Solution, Ltd.
- Front mount magnetic sweeper apparatus16 Jul 2026US 2026/0199905 A1
- Magnetic coupling device25 Jun 2026US 2026/0175337 A1Magswitch Automation Company
Most cited
By later US patents
- Magnetic retrieval tool122US 4,813,729 A1989
- Switchable permanent magnetic device78US 6,707,360 B2The Aussie Kids Toy Company Pty Ltd. · 2004
- Switchable permanent magnetic device72US 7,012,495 B2The Aussie Kids Toy Company Pty Ltd. · 2006
- System and method for utilizing magnetic energy56US 7,453,341 B12008
- Magnetic lifting apparatus47US 6,331,810 B12001