H01P 7/005
Helical resonators
Official title: {Helical resonators; Spiral resonators}
H01P7/005 (Helical resonators) appears on 50 US grants and 25 published applications in this corpus.
Search patents in H01P- Granted patents
- 50
- Published applications
- 25
- Assignees
- 32
- Inventors
- 108
- Latest grant
- 19 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 4 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 2 |
| 2002 | 2 | 0 |
| 2003 | 2 | 1 |
| 2004 | 0 | 1 |
| 2005 | 1 | 2 |
| 2006 | 0 | 1 |
| 2007 | 1 | 0 |
| 2008 | 1 | 1 |
| 2009 | 1 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 1 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 3 |
| 2019 | 1 | 1 |
| 2020 | 2 | 2 |
| 2021 | 1 | 4 |
| 2022 | 4 | 1 |
| 2023 | 3 | 3 |
| 2024 | 1 | 1 |
| 2025 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Wave control medium, wave control element, wave control member, wave control device, and manufacturing method of wave control medium19 Aug 2025US 12,394,889 B2Sony Group Corporation
- Wave control medium, wave control element, wave control device, and method for manufacturing wave control medium7 Jan 2025US 12,191,569 B2Sony Group Corporation
- Frequency tuning for modulated plasma systems30 Apr 2024US 11,972,927 B2Advanced Energy Industries, Inc.
- Filter arrangement and antenna feeding network for a multi radiator antenna having such a filter arrangement19 Dec 2023US 11,848,498 B2Cellmax Technologies AB
- Frequency tuning for modulated plasma systems31 Oct 2023US 11,804,362 B2Advanced Energy Industries, Inc.
- Wave control medium, wave control element, wave control member, wave control device, and manufacturing method of wave control medium4 Jan 2024US 2024/0006749 A1Sony Group Corporation
- Filter arrangement and antenna feeding network for a multi radiator antenna having such a filter arrangement5 Oct 2023US 2023/0318201 A1Cellmax Technologies AB
- Wave control medium, wave control element, wave control device, and method for manufacturing wave control medium6 Jul 2023US 2023/0216206 A1Sony Group Corporation
- Apparatus and system for modulated plasma systems23 Mar 2023US 2023/0086313 A1Advanced Energy Industries, Inc.
- Magnetic structure for an electromagnetic resonator, electromagnetic resonator, oscillator and method for manufacturing a magnetic structure17 Mar 2022US 2022/0085475 A1Rohde & Schwarz GmbH & Co.KG
Most cited
By later US patents
- Transmission line resonator45US 5,047,739 ALK-Products Oy · 1991
- Helix resonator44US 5,351,023 ALK-Products Oy · 1994
- Resonator device including U-shaped coupling support element44US 5,604,471 ALK-Products Oy · 1997
- Resonator structure42US 4,977,383 ALK-Products Oy · 1990
- Temperature compensation in a helix resonator40US 5,159,303 ALK-Products Oy · 1992