H03F 1/548
Protection of anode or grid circuit against overload
Official title: {Protection of anode or grid circuit against overload}
H03F1/548 (Protection of anode or grid circuit against overload) appears on 6 US grants and 2 published applications in this corpus.
Search patents in H03F- Granted patents
- 6
- Published applications
- 2
- Assignees
- 4
- Inventors
- 12
- Latest grant
- 26 Mar 2019
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 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 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 1 | 2 |
| 2019 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Circuit for providing a high and a low impedance and a system comprising the circuit26 Mar 2019US 10,243,521 B2Sonion Nederland B. V.
- Low voltage tube circuits28 Aug 2018US 10,063,194 B1
- Lightweight amplifier1 Dec 2015US 9,203,365 B1
- Protection device against flashover in a transmitter circuit26 Jul 1988US 4,760,486 ALicentia Patent-Verwaltungs-G.m.b.H.
- High frequency amplifier14 Jun 1988US 4,751,472 AHerfurth GmbH
Most cited
By later US patents