H01Q 21/20
The units being spaced along or adjacent to a curvilinear path
Official title: the units being spaced along or adjacent to a curvilinear path {(slotted waveguide arrays H01Q21/005; circularly or helically slotted waveguides H01Q21/0062)}
H01Q21/20 (The units being spaced along or adjacent to a curvilinear path) appears on 1,716 US grants and 1,659 published applications in this corpus.
Search patents in H01Q- Granted patents
- 1,716
- Published applications
- 1,659
- Assignees
- 764
- Inventors
- 3,273
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 4 | 0 |
| 1978 | 7 | 0 |
| 1979 | 11 | 0 |
| 1980 | 7 | 0 |
| 1981 | 6 | 0 |
| 1982 | 6 | 0 |
| 1983 | 2 | 0 |
| 1984 | 6 | 0 |
| 1985 | 4 | 0 |
| 1986 | 7 | 0 |
| 1987 | 2 | 0 |
| 1988 | 7 | 0 |
| 1989 | 4 | 0 |
| 1990 | 6 | 0 |
| 1991 | 5 | 0 |
| 1992 | 4 | 0 |
| 1993 | 7 | 0 |
| 1994 | 3 | 0 |
| 1995 | 4 | 0 |
| 1996 | 4 | 0 |
| 1997 | 3 | 0 |
| 1998 | 9 | 0 |
| 1999 | 19 | 0 |
| 2000 | 26 | 0 |
| 2001 | 24 | 7 |
| 2002 | 36 | 28 |
| 2003 | 24 | 37 |
| 2004 | 31 | 35 |
| 2005 | 22 | 38 |
| 2006 | 38 | 29 |
| 2007 | 27 | 31 |
| 2008 | 29 | 39 |
| 2009 | 27 | 37 |
| 2010 | 26 | 44 |
| 2011 | 22 | 34 |
| 2012 | 37 | 53 |
| 2013 | 36 | 55 |
| 2014 | 44 | 50 |
| 2015 | 40 | 69 |
| 2016 | 54 | 69 |
| 2017 | 81 | 75 |
| 2018 | 87 | 85 |
| 2019 | 98 | 134 |
| 2020 | 138 | 144 |
| 2021 | 132 | 122 |
| 2022 | 114 | 122 |
| 2023 | 118 | 111 |
| 2024 | 117 | 98 |
| 2025 | 92 | 73 |
| 2026 | 52 | 40 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Wireless access device and communication system6 Oct 2026US 12,756,112 B2Honor Device Co., Ltd.
- Antenna and antenna array15 Sep 2026US 12,738,664 B2Rohde & Schwarz GmbH & Co.KG
- Antenna radiating element and antenna device15 Sep 2026US 12,738,670 B2Proterial, Ltd.
- Antenna, detection apparatus, and terminal8 Sep 2026US 12,731,910 B2Yinwang Intelligent Technologies Co., Ltd.
- System and method for estimating an angle of arrival1 Sep 2026US 12,724,054 B2Arizona Board of Regents on behalf of Arizona State University
- Rfid tag readers with angled antenna groups24 Sep 2026US 2026/0291049 A1Automaton, Inc.
- Ultra-wideband antennas and related electromagnetic structures24 Sep 2026US 2026/0291075 A1The Charles Stark Draper Laboratory, Inc.
- Tightly coupled dipole array additively manufactured modular aperture20 Aug 2026US 2026/0246160 A1BAE Systems Information and Electronic Systems Integration Inc.
- Antenna unit, antenna device, and communication base station13 Aug 2026US 2026/0237912 A1Beijing BOE Technology Development Co., Ltd.
- Antenna systems30 Jul 2026US 2026/0222000 A1Parsec Technologies, Inc.
Most cited
By later US patents
- Access point and methods for use in a radio distributed antenna system479US 10,230,428 B1AT&T Intellectual Property I, L. P. · 2019
- Method and apparatus for coupling an antenna to a device435US 10,033,107 B2AT&T Intellectual Property I, L. P. · 2018
- Apparatus and methods for communicating with ultra-wideband electromagnetic waves381US 10,123,217 B1AT&T Intellectual Property I, L. P. · 2018
- Apparatus and methods for generating an electromagnetic wave along a transmission medium369US 10,135,145 B2AT&T Intellectual Property I, L. P. · 2018
- Apparatus and methods for sending or receiving electromagnetic signals354US 10,170,840 B2AT&T Intellectual Property I, L. P. · 2019