H01J 2225/54
Having only one cavity or other resonator
Official title: having only one cavity or other resonator, e.g. neutrode tube
H01J2225/54 (Having only one cavity or other resonator) appears on 2 US grants and 1 published applications in this corpus.
Search patents in H01J- Granted patents
- 2
- Published applications
- 1
- Assignees
- 2
- Inventors
- 4
- Latest grant
- 20 Apr 2004
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
Most cited
By later US patents