H04Q 3/54558
Redundancy, stand-by
Official title: {Redundancy, stand-by}
H04Q3/54558 (Redundancy, stand-by) appears on 56 US grants and 27 published applications in this corpus.
Search patents in H04Q- Granted patents
- 56
- Published applications
- 27
- Assignees
- 46
- Inventors
- 139
- Latest grant
- 29 Mar 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 4 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 0 |
| 2003 | 3 | 5 |
| 2004 | 1 | 1 |
| 2005 | 0 | 2 |
| 2006 | 2 | 5 |
| 2007 | 1 | 3 |
| 2008 | 4 | 3 |
| 2009 | 3 | 1 |
| 2010 | 3 | 2 |
| 2011 | 1 | 2 |
| 2012 | 1 | 1 |
| 2013 | 2 | 0 |
| 2014 | 1 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 1 | 1 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Methods and apparatuses for path selection in a packet network29 Mar 2022US 11,290,371 B2Coriant Operations, Inc.
- Methods and apparatuses for path selection in a packet network15 Jan 2019US 10,181,998 B2Coriant Operations, Inc.
- Methods and apparatuses for path selection in a packet network3 Nov 2015US 9,178,804 B2Tellabs Operations, Inc.
- Method and apparatus for provisioning a backup signaling channel24 Jun 2014US 8,761,006 B2AT&T Intellectual Property I, L. P.
- Redundancy in voice and data communications systems14 May 2013US 8,441,920 B2Cisco Technology, Inc.
- Methods And Apparatuses For Path Selection In A Packet Network15 Aug 2019US 2019/0253340 A1Coriant Operations, Inc.
- Methods and apparatuses for path selection in a packet network14 Jan 2016US 2016/0014017 A1Tellabs Operations, Inc.
- Methods and apparatuses for path selection in a packet network17 May 2012US 2012/0120951 A1Tellabs Operations, Inc.
- Redundancy in voice and data communications systems28 Apr 2011US 2011/0096661 A1Cisco Technology, Inc.
- Method and apparatus for provisioning a backup signaling channel14 Apr 2011US 2011/0085441 A1AT&T Intellectual Property I, L. P.
Most cited
By later US patents
- Cross channel circuit for an electronic system having two or more redundant computers107US 4,466,098 ASiemens Aktiengesellschaft · 1984
- Peripheral unit controller97US 4,428,044 ABell Telephone Laboratories, Incorporated · 1984
- Automatic fault recovery system for a multiple processor telecommunications switching control88US 4,371,754 ARockwell International Corporation · 1983
- Architecture for a modular communications switching system64US 6,125,111 ANortel Networks Limited · 2000
- Error protected central control unit of a switching system and method of operation of its memory configuration53US 4,860,333 AOread Laboratories, Inc. · 1989