H04Q 2213/13194
Four wire connection, transmission
H04Q2213/13194 (Four wire connection, transmission) appears on 33 US grants and 5 published applications in this corpus.
Search patents in H04Q- Granted patents
- 33
- Published applications
- 5
- Assignees
- 16
- Inventors
- 47
- Latest grant
- 13 Mar 2012
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 4 | 0 |
| 1996 | 1 | 0 |
| 1997 | 5 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 2 |
| 2007 | 1 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Method and apparatus for communicating with one of plural devices associated with a single telephone number during a disaster and disaster recovery13 Mar 2012US 8,135,410 B2Ascendent Telecommunications, Inc.
- Method for connecting routing device in existing wiring10 Feb 2009US 7,489,680 B2Comtrend Corporation
- Method and apparatus for communicating with one of plural devices associated with a single telephone number during a disaster and disaster recovery6 Nov 2007US 7,292,858 B2Ascendent Telecommunications, Inc.
- Quarter-rate 2B1Q ISDN architecture with embedded differential delay compensation for extending range of DDS communications26 Nov 2002US 6,487,222 B1Adtran, Inc.
- Two wire DDS transport system3 Sep 2002US 6,445,698 B1HyperEdge Corporation
- Method and apparatus for communicating with one of plural devices associated with a single telephone number during a disaster and disaster recovery20 Sep 2007US 2007/0217437 A1Ascendent Telecommunications, Inc.
- Method for connecting routing device in existing wiring29 Jun 2006US 2006/0140178 A1Comtrend Corporation
- Integrated access device22 Jun 2006US 2006/0133351 A1B2 Bredband AB
- Test access matrix (TAM) protector module and associated circuitry for a telecommunications system19 May 2005US 2005/0105472 A1
- Method and apparatus for communicating with one of plural devices associated with a single telephone number during a disaster and disaster recovery25 Sep 2003US 2003/0181209 A1Ascendent Telecommunications, Inc.
Most cited
By later US patents
- Automated call screening283US 5,029,196 ADytel Corporation · 1991
- Automated call screening200US 5,109,405 ADytel Corporation · 1992
- Alarm and test system for a digital added main line169US 5,111,497 ARaychem Corporation · 1992
- Automated call screening119US 5,347,574 ADytel Corporation · 1994
- Automated call screening77US 5,724,408 ASyntellect Technology Corp. · 1998