H01J 23/24
Slow-wave structures
Official title: Slow-wave structures {, e.g. delay systems}
H01J23/24 (Slow-wave structures) appears on 216 US grants and 46 published applications in this corpus.
Search patents in H01J- Granted patents
- 216
- Published applications
- 46
- Assignees
- 77
- Inventors
- 278
- Latest grant
- 14 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 7 | 0 |
| 1978 | 14 | 0 |
| 1979 | 8 | 0 |
| 1980 | 5 | 0 |
| 1981 | 15 | 0 |
| 1982 | 6 | 0 |
| 1983 | 12 | 0 |
| 1984 | 9 | 0 |
| 1985 | 5 | 0 |
| 1986 | 9 | 0 |
| 1987 | 11 | 0 |
| 1988 | 7 | 0 |
| 1989 | 7 | 0 |
| 1990 | 5 | 0 |
| 1991 | 5 | 0 |
| 1992 | 8 | 0 |
| 1993 | 4 | 0 |
| 1994 | 5 | 0 |
| 1995 | 6 | 0 |
| 1996 | 5 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 1 |
| 2002 | 2 | 1 |
| 2003 | 3 | 2 |
| 2004 | 1 | 1 |
| 2005 | 1 | 2 |
| 2006 | 1 | 2 |
| 2007 | 1 | 0 |
| 2008 | 1 | 1 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 2 | 10 |
| 2013 | 3 | 1 |
| 2014 | 6 | 2 |
| 2015 | 7 | 3 |
| 2016 | 2 | 3 |
| 2017 | 1 | 0 |
| 2018 | 2 | 1 |
| 2019 | 3 | 4 |
| 2020 | 2 | 4 |
| 2021 | 2 | 1 |
| 2022 | 1 | 1 |
| 2023 | 1 | 1 |
| 2024 | 2 | 0 |
| 2025 | 2 | 3 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Traveling wave tube14 Oct 2025US 12,444,566 B2Raytheon Company
- Lightweight, thermally stable disk for a coaxial travelling wave tube (CoTWT)15 Apr 2025US 12,278,079 B1Raytheon Company
- Travelling-wave tube26 Nov 2024US 12,154,749 B2Thales
- Slow-wave circuit, traveling wave tube, and method for manufacturing traveling wave tube13 Aug 2024US 12,062,517 B2NEC Network and Sensor Systems, Ltd.
- Electroplated helical slow-wave structures for high-frequency signals21 Feb 2023US 11,588,456 B2Wisconsin Alumni Research Foundation
- Slow-wave structure, traveling-wave tube, and communication apparatus29 Jan 2026US 2026/0031297 A1Huawei Technologies Co., Ltd.
- Slow-wave structure, traveling wave tube, electronic device, and communication system27 Nov 2025US 2025/0364201 A1Huawei Technologies Co., Ltd.
- Directed self-assembly of helices via electrodeposition on end-tethered nanomembrane ribbons for millimeter-wave traveling-wave tube amplifiers9 Oct 2025US 2025/0317115 A1UNM Rainforest Innovations
- Travelling-Wave Tube, Electron Gun, and Power Amplification System27 Feb 2025US 2025/0070736 A1Huawei Technologies Co., Ltd.
- Traveling wave tube26 Oct 2023US 2023/0343542 A1Raytheon Company
Most cited
By later US patents
- Wide-band distributed rf coupler230US 4,567,401 AThe United States of America as represented by the Secretary of the Navy · 1986
- Variable frequency RFQ linear accelerator69US 4,712,042 AAccSys Technology, Inc. · 1987
- Diamond brazing method for slow wave energy propagating structures31US 3,949,263 ARaytheon Company · 1976
- Slow-wave structure having block supported helix structure26US 5,173,669 AHughes Aircraft Company · 1992
- Helical slow-wave structure assemblies and fabrication methods25US 4,229,676 AHughes Aircraft Company · 1980