H01J 2225/04
Tubes having one or more resonators, without reflection of the electron stream
Official title: Tubes having one or more resonators, without reflection of the electron stream, and in which the modulation produced in the modulator zone is mainly density modulation, e.g. Heaff tube
H01J2225/04 (Tubes having one or more resonators, without reflection of the electron stream) appears on 14 US grants and 8 published applications in this corpus.
Search patents in H01J- Granted patents
- 14
- Published applications
- 8
- Assignees
- 13
- Inventors
- 35
- Latest grant
- 13 Jan 2009
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 4 |
| 2003 | 3 | 1 |
| 2004 | 1 | 0 |
| 2005 | 2 | 0 |
| 2006 | 1 | 2 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Electron beam tubes13 Jan 2009US 7,477,019 B2E2VV Technologies (UK) Limited
- L-band inductive output tube5 Dec 2006US 7,145,297 B2Communications & Power Industries, Inc.
- Multi-stage collector having electrode stages isolated by a distributed bypass capacitor12 Apr 2005US 6,879,208 B2Marconi Applied Technologies Limited
- Device and method for ion beam acceleration and electron beam pulse formation and amplification22 Mar 2005US 6,870,320 B2Gesellschaft fuer Schwerionenforschung GmbH
- Tubular capacitor for use in an electron beam tube24 Aug 2004US 6,781,313 B2Marconi Applied Technologies Limited
- L-band inductive output tube12 Apr 2007US 2007/0080762 A1Communications & Power Industries, Inc.
- Electron bean tubes13 Jul 2006US 2006/0152176 A1E2V Technologies (UK) Limited
- L-band inductive output tube4 May 2006US 2006/0091831 A1Communications and Power Industries, Inc., a Delaware Corporation
- Collector15 May 2003US 2003/0090208 A1Marconi Applied Technologies Limited
- Device and method for ion beam acceleration and electron beam pulse formation and amplification5 Dec 2002US 2002/0180364 A1Gesellschaft fuer Schwerionenforschung GmbH
Most cited
By later US patents
- Tubular capacitor for use in an electron beam tube12US 6,781,313 B2Marconi Applied Technologies Limited · 2004
- Thermally stable electron gun arrangement with electrically non-conductive spacer members7US 5,629,582 AEEV Limited · 1997
- Device and method for ion beam acceleration and electron beam pulse formation and amplification6US 6,870,320 B2Gesellschaft fuer Schwerionenforschung GmbH · 2005
- Inductive output amplifier output cavity structure4US 6,191,651 B1Litton Systems, Inc. · 2001
- RF radiation absorbing material disposed between the cathode and anode of an electron beam tube3US 5,691,667 AEnglish Electric Valve Company Limited · 1997