H04Q 1/245
In time-division multiplex systems
Official title: {in time-division multiplex systems}
H04Q1/245 (In time-division multiplex systems) appears on 13 US grants and 1 published applications in this corpus.
Search patents in H04Q- Granted patents
- 13
- Published applications
- 1
- Assignees
- 11
- Inventors
- 25
- Latest grant
- 28 Sep 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 6 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 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 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- AP device, IoT device, and communication device28 Sep 2021US 11,134,541 B2New H3C Technologies Co., Ltd.
- Signal capture for telecommunications switch16 Oct 2001US 6,304,655 B1Nortel Network Limited
- Method of controlling time switch for diagnosing failure on call path30 Nov 1999US 5,995,587 ASamsung Electronics Co., Ltd.
- Testing method and apparatus for verifying correct connection of curcuit elements10 Aug 1999US 5,937,032 ATelefonaktiebolaget L M
- Path monitoring system for cross-connect system27 Sep 1994US 5,351,232 ANEC Corporation
Most cited
By later US patents
- High-speed facility protection in a digital telecommunications system127US 5,329,520 AAlcatel Network Systems, Inc. · 1994
- Method of testing switches and switching circuit59US 5,347,270 AMitsubishi Denki Kabushiki Kaisha · 1994
- Diagnostic system for a distributed control switching network19US 4,439,826 AInternational Telephone and Telegraph Corporation · 1984
- Testing method and apparatus for verifying correct connection of curcuit elements14US 5,937,032 ATelefonaktiebolaget L M · 1999
- Method and a device for supervising and testing majority voting13US 5,305,325 ATelefonaktiebolaget L M Ericsson · 1994