H01P 3/123
With a complex or stepped cross-section
Official title: with a complex or stepped cross-section, e.g. ridged or grooved waveguides (H01P3/14 takes precedence)
H01P3/123 (With a complex or stepped cross-section) appears on 192 US grants and 226 published applications in this corpus.
Search patents in H01P- Granted patents
- 192
- Published applications
- 226
- Assignees
- 133
- Inventors
- 434
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 1 | 2 |
| 2006 | 2 | 1 |
| 2007 | 0 | 2 |
| 2008 | 0 | 1 |
| 2009 | 1 | 3 |
| 2010 | 2 | 3 |
| 2011 | 2 | 4 |
| 2012 | 4 | 3 |
| 2013 | 2 | 3 |
| 2014 | 3 | 2 |
| 2015 | 4 | 4 |
| 2016 | 2 | 3 |
| 2017 | 4 | 11 |
| 2018 | 10 | 18 |
| 2019 | 20 | 31 |
| 2020 | 29 | 37 |
| 2021 | 21 | 11 |
| 2022 | 13 | 24 |
| 2023 | 15 | 19 |
| 2024 | 24 | 17 |
| 2025 | 15 | 12 |
| 2026 | 5 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Compact high power radio frequency polarizer group1 Sep 2026US 12,725,898 B2TibaRay, Inc.
- Waveguide25 Aug 2026US 12,719,144 B2Denso Corporation
- Broadband transition structure with mixed contact and non-contact protrusions24 Mar 2026US 12,586,887 B2
- Waveguide antenna24 Mar 2026US 12,586,913 B2
- Antenna device, radar device, and transfer device17 Mar 2026US 12,580,318 B2Sony Group Corporation
- Waveguide device, microwave outdoor unit, and long-haul microwave transmission device24 Sep 2026US 2026/0291044 A1
- Waveguide element and method for producing a waveguide element, and also radiofrequency arrangement and radar system10 Sep 2026US 2026/0269446 A1
- Multi-Layer Waveguide Transitions3 Sep 2026US 2026/0261030 A1Gapwaves AB
- Cable apparatus and method27 Aug 2026US 2026/0254087 A1Samtec, Inc.
- Waveguide array with rounded cross-section27 Aug 2026US 2026/0254088 A1Swissto12 SA
Most cited
By later US patents
- Hollow dielectric pipe polyrod antenna228US 7,786,946 B2Arizona Board of Regents for and on behalf of Arizona State University · 2010
- Gap-mode waveguide205US 8,952,678 B22015
- Waveguide mode converter and method using same103US 4,956,620 AThe United States of America as represented by the United States Department of Energy · 1990
- Methods and apparatus for bidirectional exchange of electromagnetic waves81US 10,680,308 B2AT&T Intellectual Property I, L. P. · 2020
- Waveguides and transmission lines in gaps between parallel conducting surfaces76US 8,803,638 B2Kildal Antenna Consulting AB · 2014