H01J 23/40
To or from the interaction circuit
Official title: to or from the interaction circuit
H01J23/40 (To or from the interaction circuit) appears on 72 US grants and 22 published applications in this corpus.
Search patents in H01J- Granted patents
- 72
- Published applications
- 22
- Assignees
- 44
- Inventors
- 121
- Latest grant
- 17 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 4 | 0 |
| 1991 | 6 | 0 |
| 1992 | 2 | 0 |
| 1993 | 4 | 0 |
| 1994 | 2 | 0 |
| 1995 | 5 | 0 |
| 1996 | 4 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 4 | 3 |
| 2003 | 1 | 2 |
| 2004 | 1 | 1 |
| 2005 | 0 | 0 |
| 2006 | 2 | 2 |
| 2007 | 1 | 2 |
| 2008 | 1 | 0 |
| 2009 | 0 | 2 |
| 2010 | 2 | 0 |
| 2011 | 2 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 1 | 2 |
| 2018 | 1 | 1 |
| 2019 | 2 | 2 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 1 |
| 2025 | 0 | 2 |
| 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.
- Radio frequency and optical based power for remote component conditioning using thermoelectrics3 Mar 2020US 10,581,279 B2United Technologies Corporation
- Magnetron16 Jul 2019US 10,354,829 B2Panasonic Intellectual Property Management Co., Ltd.
- Low voltage tube circuits26 Feb 2019US 10,216,205 B2
- Inverted magnetron with amplifying structure and associated systems and methods13 Feb 2018US 9,892,882 B1The United States of America as represented by the Secretary of the Air Force
- Compact mode converter waveguide13 Nov 2025US 2025/0349486 A1Varian Medical Systems, Inc.
- 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.
- High-frequency input coupler and waveguide28 Dec 2023US 2023/0420821 A1Canon Electron Tubes & Devices Co., Ltd.
- Magnetron27 Jun 2019US 2019/0198280 A1Toshiba Hokuto Electronics Corporation
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