H04Q 2213/13381
Pair-gain system, digital loop carriers
H04Q2213/13381 (Pair-gain system, digital loop carriers) appears on 89 US grants and 38 published applications in this corpus.
Search patents in H04Q- Granted patents
- 89
- Published applications
- 38
- Assignees
- 49
- Inventors
- 186
- Latest grant
- 17 Sep 2013
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 4 | 0 |
| 1998 | 3 | 0 |
| 1999 | 6 | 0 |
| 2000 | 6 | 0 |
| 2001 | 15 | 4 |
| 2002 | 11 | 12 |
| 2003 | 6 | 5 |
| 2004 | 10 | 9 |
| 2005 | 9 | 4 |
| 2006 | 7 | 0 |
| 2007 | 1 | 3 |
| 2008 | 2 | 0 |
| 2009 | 4 | 1 |
| 2010 | 1 | 0 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- System and method for facilitating emergency calling from a remote terminal17 Sep 2013US 8,537,974 B2Intrado Corporation
- Electronic loop provisioning10 May 2011US 7,940,750 B2AT&T Intellectual Property II, L. P.
- System and method for delivering communication signals25 May 2010US 7,725,913 B1AT&T Intellectual Property I, L. P.
- Method and system for conveying multiple calls on a single telephone line21 Jul 2009US 7,564,797 B2AT&T Intellectual Property I, L. P.
- Electronic loop provisioning21 Jul 2009US 7,564,833 B2AT&T Corp.
- Electronic loop provisioning5 Nov 2009US 2009/0274147 A1AT&T Intellectual Property II, L. P.
- System and method for facilitating emergency calling from a remote terminal31 May 2007US 2007/0121802 A1Intrado Corporation
- Gateway digital loop carrier device29 Mar 2007US 2007/0071020 A1
- Remote digital subscriber line access multiplexer18 Jan 2007US 2007/0014306 A1
- Systems and methods for providing pooled access in a telecommunications network3 Nov 2005US 2005/0243808 A1Qwest Communications International Inc.
Most cited
By later US patents
- Network server platform for internet, JAVA server and video application server365US 6,044,403 AAT&T Corp. · 2000
- Control system and operations system interface for a network element in an access system244US 5,608,720 AHubbell Incorporated · 1997
- Integrated digital loop carrier system with virtual tributary mapper circuit103US 7,079,555 B2Pulse Communications, Inc. · 2006
- Integrated digital loop carrier system with virtual tributary mapper circuit84US 5,784,377 AHubbell Incorporated · 1998
- Voice plus 4-wire DDS multiplexer83US 5,610,922 ARaychem Corporation · 1997