H01Q 9/20
Two collinear substantially straight active elements
Official title: Two collinear substantially straight active elements; Substantially straight single active elements (H01Q9/28 takes precedence)
H01Q9/20 (Two collinear substantially straight active elements) appears on 279 US grants and 293 published applications in this corpus.
Search patents in H01Q- Granted patents
- 279
- Published applications
- 293
- Assignees
- 226
- Inventors
- 660
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 3 | 1 |
| 2003 | 4 | 3 |
| 2004 | 0 | 2 |
| 2005 | 3 | 5 |
| 2006 | 8 | 9 |
| 2007 | 5 | 12 |
| 2008 | 6 | 13 |
| 2009 | 6 | 16 |
| 2010 | 13 | 15 |
| 2011 | 7 | 15 |
| 2012 | 10 | 14 |
| 2013 | 18 | 10 |
| 2014 | 16 | 25 |
| 2015 | 12 | 15 |
| 2016 | 9 | 9 |
| 2017 | 19 | 13 |
| 2018 | 10 | 11 |
| 2019 | 17 | 17 |
| 2020 | 14 | 18 |
| 2021 | 21 | 18 |
| 2022 | 11 | 13 |
| 2023 | 17 | 11 |
| 2024 | 14 | 9 |
| 2025 | 9 | 10 |
| 2026 | 7 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Communication device8 Sep 2026US 12,731,902 B2Sony Group Corporation
- Artificial intelligence empowered multi-layer coupling-controlled antenna system25 Aug 2026US 12,719,158 B2Skymirr, Inc.
- RFID antenna for rejecting unwanted RF signals11 Aug 2026US 12,706,370 B2Checkpoint Systems, Inc.
- Vertically-polarized omnidirectional antenna with broadband amplitude taper14 Jul 2026US 12,683,296 B2PCTEL, Inc.
- Arraying architecture of piezoelectric RF radiators2 Jun 2026US 12,646,848 B1Rockwell Collins, Inc.
- Antenna structure27 Aug 2026US 2026/0254128 A1Senao Networks, Inc.
- Antenna switching circuit27 Aug 2026US 2026/0254488 A1TP-Link Systems Inc.
- Communication device2 Jul 2026US 2026/0188908 A1Sony Group Corporation
- Parametric matching methods for broadband, high sensitivity reception with electrically small antennas23 Apr 2026US 2026/0112815 A1The Regents of the University of California
- Antenna device and communication apparatus26 Mar 2026US 2026/0088503 A1Wistron Neweb Corp.
Most cited
By later US patents
- Gap raidated antenna231US 5,592,183 A1997
- Subsurface radiating dipole129US 4,583,589 ARaytheon Company · 1986
- Antenna system107US 6,498,589 B1DX Antenna Company, Limited · 2002
- Metrology antenna system utilizing two-port, sleeve dipole and non-radiating balancing network80US 6,657,601 B2TDK RF Solutions · 2003
- Antenna employing a cover77US 7,358,927 B2Eaton Corporation · 2008