H01J 2225/50
Magnetrons, i.e. tubes with a magnet system producing an h-field crossing the
Official title: Magnetrons, i.e. tubes with a magnet system producing an H-field crossing the E-field
H01J2225/50 (Magnetrons, i.e. tubes with a magnet system producing an h-field crossing the) appears on 34 US grants and 7 published applications in this corpus.
Search patents in H01J- Granted patents
- 34
- Published applications
- 7
- Assignees
- 18
- Inventors
- 50
- Latest grant
- 15 Feb 2005
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1994 | 5 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 5 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 0 |
| 2002 | 2 | 3 |
| 2003 | 0 | 3 |
| 2004 | 5 | 1 |
| 2005 | 2 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- High frequency heating device15 Feb 2005US 6,856,095 B2Delta Electronics, Inc.
- 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
- Magnetron drive circuit2 Mar 2004US 6,700,532 B2Furuno Electric Co., Ltd.
- High frequency heating device8 Jan 2004US 2004/0004439 A1Delta Electronics, Inc.
- Phased array source of electromagnetic radiation6 Nov 2003US 2003/0205960 A1Raytheon Company
- Magnetron anodes10 Jul 2003US 2003/0127987 A1E2V Technologies (UK) Limited
- Magnetron drive circuit27 Mar 2003US 2003/0058160 A1Furuno Electric Co., Ltd.
- Magnetron5 Dec 2002US 2002/0180363 A1Sanyo Electric Co., Ltd.
Most cited
By later US patents
- Microwave oven and magnetron with cold cathode14US 5,676,873 ASharp Kabushiki Kaisha · 1997
- Magnetron having a cathode mount with a grooved recess for securely receiving a cathode filament10US 5,861,716 AHitachi Electronic Devices Co., Ltd. · 1999
- Magnetron with feed-through capacitor having a dielectric constant effecting a decrease in acoustic noise8US 5,604,405 AHitachi, Ltd. · 1997
- Method of forming noise filter for a magnetron8US 6,404,301 B1LG Electronics Inc. · 2002
- Lighting apparatus using microwave8US 6,680,576 B2LG Electronics Inc. · 2004