H01J 2225/58
Having a number of resonators
Official title: having a number of resonators; having a composite resonator, e.g. a helix
H01J2225/58 (Having a number of resonators) appears on 12 US grants and 3 published applications in this corpus.
Search patents in H01J- Granted patents
- 12
- Published applications
- 3
- Assignees
- 9
- Inventors
- 19
- Latest grant
- 11 Jan 2005
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 2 |
| 2003 | 0 | 1 |
| 2004 | 2 | 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.
- Lighting apparatus using microwave20 Jan 2004US 6,680,576 B2LG Electronics Inc.
- Optical tuning of magnetron using leaky light structure10 Jul 2001US 6,259,208 B1
- Magnetron apparatus having a segmented anode edges and manufacturing method24 Apr 2001US 6,222,319 B1Matsushita Electronics Corporation
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
- 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
- Magnetron for a microwave oven4US 5,350,905 AGoldstar Co., Ltd. · 1994