H01P 1/218
The ferromagnetic material acting as a frequency selective coupling element
Official title: the ferromagnetic material acting as a frequency selective coupling element, e.g. YIG-filters
H01P1/218 (The ferromagnetic material acting as a frequency selective coupling element) appears on 99 US grants and 50 published applications in this corpus.
Search patents in H01P- Granted patents
- 99
- Published applications
- 50
- Assignees
- 52
- Inventors
- 161
- Latest grant
- 30 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 5 | 0 |
| 1986 | 3 | 0 |
| 1987 | 4 | 0 |
| 1988 | 5 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 4 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 2 | 1 |
| 2003 | 1 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 4 |
| 2009 | 3 | 4 |
| 2010 | 2 | 2 |
| 2011 | 0 | 2 |
| 2012 | 4 | 0 |
| 2013 | 2 | 2 |
| 2014 | 1 | 3 |
| 2015 | 2 | 1 |
| 2016 | 0 | 0 |
| 2017 | 2 | 2 |
| 2018 | 1 | 5 |
| 2019 | 3 | 7 |
| 2020 | 7 | 3 |
| 2021 | 5 | 1 |
| 2022 | 2 | 1 |
| 2023 | 1 | 4 |
| 2024 | 3 | 1 |
| 2025 | 3 | 3 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Short-wavelength spin wave transducer30 Sep 2025US 12,431,602 B2University of Notre Dame du Lac
- Broadband magnetostatic surface wave devices with customizable frequency response9 Sep 2025US 12,412,970 B2Metamagnetics, Inc.
- Frequency selective limiter having an enhanced bandwidth4 Mar 2025US 12,244,048 B2Metamagnetics, Inc.
- Magnetically tunable ferrimagnetic filter29 Oct 2024US 12,132,461 B2Integrated Microwave Corporation
- Magnetically tunable ferrimagnetic filter29 Oct 2024US 12,132,462 B2Integrated Microwave Corporation
- Short-wavelength spin wave transducer22 Jan 2026US 2026/0024904 A1University of Notre Dame du Lac
- Negative-refraction implementation method using photo-magnon coupling and control method therefor6 Nov 2025US 2025/0343343 A1Seoul National University R&Db Foundation
- Broadband magnetostatic surface wave devices with customizable frequency response2 Oct 2025US 2025/0309514 A1Metamagnetics, Inc.
- Frequency Selective Limiter Having an Enhanced Bandwidth5 Jun 2025US 2025/0183507 A1Metamagnetics, Inc.
- Magnetically tunable ferrimagnetic filter4 Apr 2024US 2024/0113677 A1Integrated Microwave Corporation
Most cited
By later US patents
- Resonator for wireless power transmission118US 8,299,877 B2Samsung Electronics Co., Ltd. · 2012
- Ferrite-semiconductor resonator and filter35US 5,424,698 AMotorola, Inc. · 1995
- Fast tuning YIG frequency synthesizer35US 5,508,661 ALitton Industries, Inc. · 1996
- Microwave notch filter using pin diode shunted YIG resonators27US 4,965,539 AWatkins-Johnson Company · 1990
- Microwave transmission devices comprising gyromagnetic material having smoothly varying saturation magnetization15US 4,390,853 ATRW Inc. · 1983