H01F 29/12
Having movable coil, winding, or part thereof
Official title: having movable coil, winding, or part thereof; having movable shield
H01F29/12 (Having movable coil, winding, or part thereof) appears on 28 US grants and 17 published applications in this corpus.
Search patents in H01F- Granted patents
- 28
- Published applications
- 17
- Assignees
- 29
- Inventors
- 55
- Latest grant
- 2 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 2 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 1 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 2 |
| 2016 | 1 | 2 |
| 2017 | 1 | 3 |
| 2018 | 0 | 1 |
| 2019 | 1 | 3 |
| 2020 | 4 | 0 |
| 2021 | 1 | 1 |
| 2022 | 0 | 1 |
| 2023 | 0 | 1 |
| 2024 | 2 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Variable inductor device comprising first and second planar loops configured to be separable by pivoting about a hinge2 Dec 2025US 12,488,938 B2Lam Research Corporation
- Variable inductive displacement sensor, associated device, system and aircraft17 Sep 2024US 12,092,495 B2Safran Electronics & Defense
- Device for a wireless power transfer system20 Feb 2024US 11,909,222 B2Ningbo Geely Automobile Rese arch & Dev. Co., Ltd.
- Electrical component22 Jun 2021US 11,043,330 B2Siemens Aktiengesellschaft
- Inductance adjusting device29 Dec 2020US 10,878,989 B2Nippon Steel Corporation
- Pcb-based stranded, twisted excitation windings in rotary transformers24 Oct 2024US 2024/0355540 A1BorgWarner Inc.
- Variable inductive displacement sensor, associated device, system and aircraft2 Mar 2023US 2023/0068680 A1Safran Electronics & Defense
- Variable inductor device21 Jul 2022US 2022/0230802 A1Lam Research Corporation
- Device for a wireless power transfer system24 Jun 2021US 2021/0194283 A1Ningbo Geely Automobile Research & Development Co.
- Power converting device and image forming apparatus employing the same11 Jul 2019US 2019/0212690 A1Toshiba Tec Kabushiki Kaisha
Most cited
By later US patents
- Electrical transformer29US 4,500,832 ACodman & Shurtleff, Inc. · 1985
- Moving magnetic field electric power converter29US 4,870,558 A1989
- Use of variable impedance to control coil sputter distribution23US 6,579,426 B1APPLIED Materials.Inc. · 2003
- Use of variable impedance to control coil sputter distribution20US 6,652,717 B1APPLIED Materials.Inc. · 2003
- Contactless keyswitch for keyboards19US 4,117,438 ADatanetics Corporation · 1978