H04B 3/52
Systems for transmission between fixed stations via waveguides
H04B3/52 (Systems for transmission between fixed stations via waveguides) appears on 618 US grants and 627 published applications in this corpus.
Search patents in H04B- Granted patents
- 618
- Published applications
- 627
- Assignees
- 138
- Inventors
- 483
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 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 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 2 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 1 |
| 2009 | 1 | 2 |
| 2010 | 0 | 2 |
| 2011 | 4 | 4 |
| 2012 | 2 | 2 |
| 2013 | 1 | 5 |
| 2014 | 4 | 5 |
| 2015 | 9 | 11 |
| 2016 | 14 | 88 |
| 2017 | 55 | 97 |
| 2018 | 122 | 114 |
| 2019 | 125 | 124 |
| 2020 | 118 | 59 |
| 2021 | 54 | 48 |
| 2022 | 49 | 29 |
| 2023 | 24 | 13 |
| 2024 | 12 | 10 |
| 2025 | 11 | 6 |
| 2026 | 3 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Architecture for high temperature radio frequency smart node21 Apr 2026US 12,609,719 B2Rtx Corporation
- Robust radio frequency waveguide system for gas turbine engines3 Mar 2026US 12,567,881 B2Rtx Corporation
- Radio-controlled two way acoustic modem24 Feb 2026US 12,562,944 B2NEC Corporation
- Spatially multiplexed acoustic modem2 Dec 2025US 12,489,661 B2NEC Corporation
- Wired cooperative multiple input multiple output (CMIMO) signal transmission method based on the multimode transmission line18 Nov 2025US 12,476,669 B2South China University of Technology
- Half duplex mode digital beamforming device27 Aug 2026US 2026/0254110 A1Space Exploration Technologies Corp.
- Robust radio frequency waveguide system for gas turbine engines16 Jul 2026US 2026/0205159 A1Rtx Corporation
- Surface electromagnetic wave antenna25 Jun 2026US 2026/0180162 A1Saltenna LLC
- Millimetre-wave communication system5 Mar 2026US 2026/0066999 A1Katholieke Universiteit Leuven
- Method and Machine for the Discrimination of the Spacetime Separation between Wave Packets25 Dec 2025US 2025/0392294 A1
Most cited
By later US patents
- Millimeter-wave surface-wave communications708US 8,897,697 B1AT&T Intellectual Property I, L. P. · 2014
- Backhaul link for distributed antenna system604US 9,113,347 B2AT&T Intellectual Property I, L. P. · 2015
- Surface wave power line communications system and method602US 7,280,033 B2Current Technologies, LLC · 2007
- Method and repeater for broadband distribution589US 9,893,795 B1AT&T Intellectual Property I, L. P. · 2018
- Quasi-optical coupler578US 9,209,902 B2AT&T Intellectual Property I, L. P. · 2015