H01J 2225/10
Klystrons, i.e. tubes having two or more resonators, without reflection of the
Official title: Klystrons, i.e. tubes having two or more resonators, without reflection of the electron stream, and in which the stream is modulated mainly by velocity in the zone of the input resonator
H01J2225/10 (Klystrons, i.e. tubes having two or more resonators, without reflection of the) appears on 18 US grants and 5 published applications in this corpus.
Search patents in H01J- Granted patents
- 18
- Published applications
- 5
- Assignees
- 13
- Inventors
- 34
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1995 | 4 | 0 |
| 1996 | 0 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 2 |
| 2004 | 1 | 0 |
| 2005 | 2 | 0 |
| 2006 | 0 | 2 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H01J 2225/12With pencil-like electron stream in the axis of the resonatorsIndexing code2
- H01J 2225/11Extended interaction klystronsIndexing code1
- H01J 2225/18With radial or disc-like electron stream perpendicular to the axis of theIndexing code1
- H01J 2225/14With tube-like electron stream coaxial with the axis of the resonatorsIndexing code0
- H01J 2225/16With pencil-like electron stream perpendicular to the axis of the resonatorsIndexing code0
- H01J 2225/20Having special arrangements in the space between resonatorsIndexing code0
Recent patents
- Klystrons and medical electron linear accelerators8 Sep 2026US 12,731,751 B2Shanghai United Imaging Healthcare Co., Ltd.
- Electron beam tubes13 Jan 2009US 7,477,019 B2E2VV Technologies (UK) Limited
- Multi-stage collector having electrode stages isolated by a distributed bypass capacitor12 Apr 2005US 6,879,208 B2Marconi Applied Technologies Limited
- Multiple stage depressed collector (MSDC) klystron based amplifier for ground based satellite and terrestrial communications22 Mar 2005US 6,870,318 B2Communications and Power Industries, Inc., Satcom Division
- Gun-only magnet used for a multi-stage depressed collector klystron17 Aug 2004US 6,777,877 B1Communication and Power Industries, Inc.
- Klystrons and medical electron linear accelerators10 Oct 2024US 2024/0339281 A1Shanghai United Imaging Healthcare Co., Ltd.
- Electron bean tubes13 Jul 2006US 2006/0152176 A1E2V Technologies (UK) Limited
- Electron gun4 May 2006US 2006/0091776 A1NEC Microwave Tube, Ltd.
- Multiple stage depressed collector (MSDC) klystron based amplifier for ground based satellite and terrestrial communications11 Sep 2003US 2003/0168986 A1Communications and Power Industries, Inc., Satcom Division
- Collector15 May 2003US 2003/0090208 A1Marconi Applied Technologies Limited
Most cited
By later US patents
- Multiple-beam electron tube with cavity/beam coupling via drift tubes having facing lips10US 5,838,107 AThomson Tubes Electroniques · 1998
- Multibeam electronic tube with magnetic field for correcting beam trajectory10US 6,486,605 B1Thomson Tubes Electroniques · 2002
- Electronic gun for multibeam electron tube and multibeam electron tube with the electron gun7US 6,147,447 AThomson Tubes Electroniques · 2000
- Coaxial inductive output tube having an annular output cavity6US 6,084,353 ACommunications & Power Industries, Inc. · 2000
- Leaky wall filter for use in extended interaction klystron5US 5,469,024 ALitton Systems, Inc. · 1995