H01J 2225/52
With an electron space having a shape that does not prevent any
Official title: with an electron space having a shape that does not prevent any electron from moving completely around the cathode or guide electrode
H01J2225/52 (With an electron space having a shape that does not prevent any) appears on 16 US grants and 4 published applications in this corpus.
Search patents in H01J- Granted patents
- 16
- Published applications
- 4
- Assignees
- 12
- Inventors
- 27
- Latest grant
- 11 Jan 2005
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 2 |
| 2003 | 0 | 2 |
| 2004 | 3 | 0 |
| 2005 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Magnetron anodes11 Jan 2005US 6,841,940 B2E2V Technologies (UK) Limited
- Method for making magnetrons4 May 2004US 6,729,926 B2Sanyo Electric Co., Ltd.
- Phased array source of electromagnetic radiation20 Apr 2004US 6,724,146 B2Raytheon Company
- Lighting apparatus using microwave20 Jan 2004US 6,680,576 B2LG Electronics Inc.
- Magnetron having a secondary electron emitter isolated from an end shield14 May 2002US 6,388,379 B1Northrop Grumman Corporation
- Phased array source of electromagnetic radiation6 Nov 2003US 2003/0205960 A1Raytheon Company
- Magnetron anodes10 Jul 2003US 2003/0127987 A1E2V Technologies (UK) Limited
- Lighting apparatus using microwave8 Aug 2002US 2002/0105276 A1LG Electronics Inc.
- Method for making magnetrons27 Jun 2002US 2002/0081934 A1Sanyo Electric Co., Ltd.
Most cited
By later US patents
- Magnetron having a cathode mount with a grooved recess for securely receiving a cathode filament10US 5,861,716 AHitachi Electronic Devices Co., Ltd. · 1999
- Lighting apparatus using microwave8US 6,680,576 B2LG Electronics Inc. · 2004
- Phased array source of electromagnetic radiation7US 6,724,146 B2Raytheon Company · 2004
- Magnetron having a cathode with tapered end shields6US 5,357,168 AGoldstar Co., Ltd. · 1994
- Optical tuning of magnetron using leaky light structure6US 6,259,208 B12001