H01J 23/36
Coupling devices having distributed capacitance and inductance, structurally associated with the tube
Official title: Coupling devices having distributed capacitance and inductance, structurally associated with the tube, for introducing or removing wave energy
H01J23/36 (Coupling devices having distributed capacitance and inductance, structurally associated with the tube) appears on 192 US grants and 75 published applications in this corpus.
Search patents in H01J- Granted patents
- 192
- Published applications
- 75
- Assignees
- 96
- Inventors
- 305
- Latest grant
- 17 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 5 | 0 |
| 1978 | 4 | 0 |
| 1979 | 3 | 0 |
| 1980 | 4 | 0 |
| 1981 | 4 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 7 | 0 |
| 1988 | 2 | 0 |
| 1989 | 5 | 0 |
| 1990 | 4 | 0 |
| 1991 | 8 | 0 |
| 1992 | 3 | 0 |
| 1993 | 11 | 0 |
| 1994 | 6 | 0 |
| 1995 | 6 | 0 |
| 1996 | 10 | 0 |
| 1997 | 6 | 0 |
| 1998 | 5 | 0 |
| 1999 | 7 | 0 |
| 2000 | 3 | 0 |
| 2001 | 5 | 3 |
| 2002 | 10 | 5 |
| 2003 | 4 | 5 |
| 2004 | 5 | 5 |
| 2005 | 1 | 1 |
| 2006 | 4 | 4 |
| 2007 | 3 | 8 |
| 2008 | 3 | 1 |
| 2009 | 3 | 4 |
| 2010 | 3 | 2 |
| 2011 | 4 | 1 |
| 2012 | 1 | 1 |
| 2013 | 1 | 4 |
| 2014 | 2 | 2 |
| 2015 | 5 | 3 |
| 2016 | 1 | 2 |
| 2017 | 4 | 3 |
| 2018 | 1 | 3 |
| 2019 | 8 | 5 |
| 2020 | 1 | 1 |
| 2021 | 2 | 1 |
| 2022 | 1 | 3 |
| 2023 | 2 | 3 |
| 2024 | 1 | 1 |
| 2025 | 1 | 4 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- High-frequency coaxial input coupler including a transmission window that couples a waveguide to an acceleration cavity17 Mar 2026US 12,580,287 B2Canon Electron Tubes & Devices Co., Ltd.
- Semi-transparent detector array and spatially tunable filter array17 Jun 2025US 12,332,422 B2L3Harris Technologies, Inc.
- Pillbox-type RF window including a protrusion and notch assembly for suppressing rotation of the window and a manufacturing method therefor2 Apr 2024US 11,949,140 B2NEC Network and Sensor Systems, Ltd.
- Injection-locked magnetron system based on filament injection12 Dec 2023US 11,842,878 B2Sichuan University
- Magnetron filter board for microwave oven21 Mar 2023US 11,612,022 B2Rockwell Collins, Inc.
- Compact mode converter waveguide13 Nov 2025US 2025/0349486 A1Varian Medical Systems, Inc.
- Semi-transparent detector array and spatially tunable filter array11 Sep 2025US 2025/0284111 A1L3Harris Technologies, Inc.
- Magnetron and Microwave Heating Device10 Jul 2025US 2025/0227822 A1Guangdong Witol Vacuum Electronic Manufacture Co., Ltd.
- Electron gun and vacuum electronic device20 Mar 2025US 2025/0095945 A1
- Pillbox window and method of manufacturing pillbox window12 Sep 2024US 2024/0304966 A1Canon Electron Tubes & Devices Co., Ltd.
Most cited
By later US patents
- Slotted dielectric-lined waveguide couplers and windows231US 5,043,629 AGeneral Atomics · 1991
- Couplers for extracting RF power from a gyrotron cavity directly into fundamental mode waveguide229US 5,015,914 AVarian Associates, Inc. · 1991
- Quasi-optical coupler with reduced diffraction229US 5,652,554 AThomson Tubes Electroniques · 1997
- Gyrotron having a quasi-optical mode converter225US 5,187,409 AKabushiki Kaisha Toshiba · 1993
- Microwave apparatus having coaxial waveguide partitioned by vacuum-tight dielectric plate127US 4,734,666 AKabushiki Kaisha Toshiba · 1988