H04Q 3/42
Circuit arrangements for indirect selecting controlled by common circuits
Official title: Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
H04Q3/42 (Circuit arrangements for indirect selecting controlled by common circuits) appears on 1,201 US grants and 291 published applications in this corpus.
Search patents in H04Q- Granted patents
- 1,201
- Published applications
- 291
- Assignees
- 373
- Inventors
- 2,057
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 63 | 0 |
| 1977 | 56 | 0 |
| 1978 | 43 | 0 |
| 1979 | 12 | 0 |
| 1980 | 27 | 0 |
| 1981 | 18 | 0 |
| 1982 | 20 | 0 |
| 1983 | 18 | 0 |
| 1984 | 17 | 0 |
| 1985 | 13 | 0 |
| 1986 | 25 | 0 |
| 1987 | 23 | 0 |
| 1988 | 16 | 0 |
| 1989 | 26 | 0 |
| 1990 | 26 | 0 |
| 1991 | 24 | 0 |
| 1992 | 17 | 0 |
| 1993 | 21 | 0 |
| 1994 | 33 | 0 |
| 1995 | 49 | 0 |
| 1996 | 49 | 0 |
| 1997 | 33 | 0 |
| 1998 | 58 | 0 |
| 1999 | 46 | 0 |
| 2000 | 72 | 0 |
| 2001 | 58 | 20 |
| 2002 | 46 | 31 |
| 2003 | 39 | 34 |
| 2004 | 19 | 28 |
| 2005 | 26 | 19 |
| 2006 | 22 | 18 |
| 2007 | 21 | 21 |
| 2008 | 20 | 13 |
| 2009 | 17 | 17 |
| 2010 | 10 | 5 |
| 2011 | 13 | 7 |
| 2012 | 14 | 5 |
| 2013 | 11 | 7 |
| 2014 | 9 | 5 |
| 2015 | 10 | 5 |
| 2016 | 5 | 7 |
| 2017 | 9 | 9 |
| 2018 | 11 | 8 |
| 2019 | 10 | 10 |
| 2020 | 6 | 1 |
| 2021 | 2 | 5 |
| 2022 | 4 | 7 |
| 2023 | 7 | 6 |
| 2024 | 2 | 1 |
| 2025 | 3 | 0 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H04Q 3/54In which the logic circuitry controlling the exchange is centralised794
- H04Q 3/52Using static devices in switching stages290
- H04Q 3/47Using translators49
- H04Q 3/48Using markers4
- H04Q 3/56In which the control signals are multiplexed3
- H04Q 3/44Using revertive control0
- H04Q 3/46Using signals other than revertive impulses0
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