H01J 13/50
Tubes having a single main anode
H01J13/50 (Tubes having a single main anode) appears on 7 US grants and 3 published applications in this corpus.
Search patents in H01J- Granted patents
- 7
- Published applications
- 3
- Assignees
- 6
- Inventors
- 11
- Latest grant
- 25 Oct 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 1 | 0 |
| 2021 | 1 | 2 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Bidirectional gas discharge tube25 Oct 2022US 11,482,394 B2General Electric Technology GmbH
- Solution electrode glow discharge apparatus28 Sep 2021US 11,133,146 B22S Water Incorporated
- Cold cathode switching device and converter3 Mar 2020US 10,580,610 B2General Electric Company
- Orientation independent ignitron with grooved cathode13 Nov 1990US 4,970,440 AHughes Aircraft Company
- Ignitron with arc-centering magnetic field23 May 1989US 4,833,363 AEnglish Electric Valve Company Limited
Most cited
By later US patents
- Treatment of material by ultra-violet irradiation5US 3,987,306 AThe Electricity Council · 1976
- Production of ultra-violet radiation2US 3,942,018 AThe Electricity Council · 1976
- Ignitron with arc-centering magnetic field1US 4,833,363 AEnglish Electric Valve Company Limited · 1989
- Orientation independent ignitron with grooved cathode1US 4,970,440 AHughes Aircraft Company · 1990