H03J 7/24
Using varactors, i.e. voltage variable reactive diodes
Official title: using varactors, i.e. voltage variable reactive diodes (H03J7/28 takes precedence)
H03J7/24 (Using varactors, i.e. voltage variable reactive diodes) appears on 36 US grants and 4 published applications in this corpus.
Search patents in H03J- Granted patents
- 36
- Published applications
- 4
- Assignees
- 24
- Inventors
- 54
- Latest grant
- 11 Oct 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 5 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 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 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 1 | 1 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Pet monitoring device11 Oct 2022US 11,464,205 B2SureFlap Ltd
- Digital coherent receiving apparatus13 Sep 2016US 9,444,554 B2Fujitsu Limited
- Digital coherent receiving apparatus11 Feb 2014US 8,649,689 B2Fujitsu Limited
- Reverse electronic tuning circuit for FM radio frequency-lock-loop circuits23 Jan 2007US 7,167,697 B2OneWorld Enterprises Limited
- Automatic frequency control apparatus and method therefor19 Mar 1996US 5,500,878 ANEC Corporation
- Pet monitoring device6 Aug 2020US 2020/0245590 A1SureFlap Ltd
- Digital coherent receiving apparatus30 Jan 2014US 2014/0029959 A1Fujitsu Limited
- Digital coherent receiving apparatus30 Dec 2010US 2010/0329697 A1Fujitsu Limited
- Reverse electronic tuning circuit for FM radio frequency-lock-loop circuits5 May 2005US 2005/0096003 A1OneWorld Enterprises Limited
Most cited
By later US patents
- Variable ramp speed TV tuning system for rapid channel tuning109US 4,374,437 AZenith Radio Corporation · 1983
- Television tuning system with provisions for quickly locating active cable channels41US 4,763,195 ARCA Licensing Corporation · 1988
- Automatic frequency control apparatus and method therefor15US 5,500,878 ANEC Corporation · 1996
- Method of amplitude-frequency conversion and a converter which operates in accordance with said method14US 3,968,447 ACommissariat A L' Energie Atomique · 1976
- Radio receiver having frequency sweep control apparatus11US 5,335,348 ANEC Corporation · 1994