H01F 21/06
By movement of core or part of core relative to the windings
Official title: by movement of core or part of core relative to the windings as a whole
H01F21/06 (By movement of core or part of core relative to the windings) appears on 131 US grants and 99 published applications in this corpus.
Search patents in H01F- Granted patents
- 131
- Published applications
- 99
- Assignees
- 99
- Inventors
- 277
- Latest grant
- 4 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 4 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 4 | 0 |
| 1982 | 4 | 0 |
| 1983 | 3 | 0 |
| 1984 | 6 | 0 |
| 1985 | 5 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 2 | 4 |
| 2003 | 3 | 1 |
| 2004 | 1 | 4 |
| 2005 | 3 | 2 |
| 2006 | 2 | 6 |
| 2007 | 2 | 1 |
| 2008 | 2 | 3 |
| 2009 | 3 | 4 |
| 2010 | 1 | 3 |
| 2011 | 1 | 4 |
| 2012 | 5 | 3 |
| 2013 | 4 | 1 |
| 2014 | 3 | 8 |
| 2015 | 3 | 6 |
| 2016 | 4 | 3 |
| 2017 | 4 | 6 |
| 2018 | 4 | 1 |
| 2019 | 3 | 5 |
| 2020 | 1 | 7 |
| 2021 | 10 | 5 |
| 2022 | 6 | 5 |
| 2023 | 5 | 7 |
| 2024 | 5 | 4 |
| 2025 | 6 | 5 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Wireless power transmission device and operating method therefor4 Nov 2025US 12,463,471 B2Samsung Electronics Co., Ltd.
- EMC filter for electromagnetic regulation of converter and manufacturing method thereof14 Oct 2025US 12,445,049 B2Hyundai Mobis Co., Ltd.
- Linear variable differential transducer23 Sep 2025US 12,424,371 B2Hamilton Sundstrand Corporation
- Dual rotary variable differential transducer3 Jun 2025US 12,320,676 B2Sensata Technologies, Inc.
- Adaptive control electromagnetic induction energy harvesting method and system for a power transmission line27 May 2025US 12,316,129 B1State Grid Shanghai Municipal Electric Power Company
- Simultaneous wound solenoid position indicator and nuclear power plant comprising same25 Dec 2025US 2025/0391580 A1Korea Atomic Energy Research Institute
- Emc filter for electromagnetic regulation of converter and manufacturing method thereof4 Sep 2025US 2025/0279719 A1Hyundai Mobis Co., Ltd.
- Rotary variable differential transformer8 May 2025US 2025/0149227 A1Honeywell International Inc.
- System for parametric resonant varying inductance13 Mar 2025US 2025/0087400 A1Elan Research - 9456-4424 QuéBec Inc.
- Voltage-current phase-based method for linear and rotary transformer systems, and associated systems and methods13 Feb 2025US 2025/0052596 A1Blue Origin, LLC
Most cited
By later US patents
- Intravascular pressure and flow sensor523US 5,873,835 ASciMed Life Systems, Inc. · 1999
- Adjustable air gap ferrite structures and methods of manufacture65US 4,523,170 ASpang & Company · 1985
- Displacement transducers employing printed coil structures53US 4,253,079 A1981
- Steering wheel and car using the steering wheel44US 9,509,170 B2Hon Hai Precision Industry Co., Ltd. · 2016
- Harmonically graded airgap reluctance-type rotating electric resolver33US 4,631,510 APowerton, division of Contraves Goerz Corporation · 1986