H01Q 9/24
Shunt feed arrangements to single active elements
Official title: Shunt feed arrangements to single active elements, e.g. for delta matching
H01Q9/24 (Shunt feed arrangements to single active elements) appears on 78 US grants and 79 published applications in this corpus.
Search patents in H01Q- Granted patents
- 78
- Published applications
- 79
- Assignees
- 68
- Inventors
- 172
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 4 |
| 2008 | 1 | 4 |
| 2009 | 3 | 10 |
| 2010 | 5 | 4 |
| 2011 | 4 | 8 |
| 2012 | 3 | 5 |
| 2013 | 7 | 2 |
| 2014 | 11 | 7 |
| 2015 | 1 | 1 |
| 2016 | 4 | 1 |
| 2017 | 4 | 1 |
| 2018 | 1 | 3 |
| 2019 | 3 | 5 |
| 2020 | 1 | 5 |
| 2021 | 7 | 4 |
| 2022 | 4 | 4 |
| 2023 | 3 | 3 |
| 2024 | 4 | 1 |
| 2025 | 5 | 4 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- RFID antenna for rejecting unwanted RF signals11 Aug 2026US 12,706,370 B2Checkpoint Systems, Inc.
- Dual-band dipole antenna and electronic device10 Mar 2026US 12,573,755 B2Luxshare Precision Industry Co., Ltd.
- Antenna system and electronic device18 Nov 2025US 12,476,367 B2Huawei Technologies Co., Ltd.
- RFID tag3 Jun 2025US 12,321,803 B2Daio Paper Corporation
- IC tag20 May 2025US 12,307,313 B2Nitta Corporation
- Parametric matching methods for broadband, high sensitivity reception with electrically small antennas23 Apr 2026US 2026/0112815 A1The Regents of the University of California
- Rfid antenna for rejecting unwanted rf signals6 Nov 2025US 2025/0343345 A1Checkpoint Systems, Inc.
- Dual-band dipole antenna and electronic device3 Jul 2025US 2025/0219292 A1Luxshare Precision Industry Co., Ltd.
- Rfid tag and antenna pattern24 Apr 2025US 2025/0132498 A1Toppan Holdings Inc.
- Antenna system and electronic device20 Mar 2025US 2025/0096466 A1Huawei Technologies Co., Ltd.
Most cited
By later US patents
- Enhanced performance and security RFID device46US 8,833,664 B22014
- Antenna systems for passive RFID tags40US 7,855,697 B2Corning Cable Systems LLC · 2010
- Implementation of ultra wide band (UWB) electrically small antennas by means of distributed non foster loading40US 7,898,493 B1The Ohio State University · 2011
- Radio frequency heat applicator for increased heavy oil recovery31US 8,789,599 B2Harris Corporation · 2014
- Stub matched antenna and method of feeding same27US 4,259,673 A1981