H04Q 11/0464
Primary rate access circuits
Official title: {Primary rate access circuits}
H04Q11/0464 (Primary rate access circuits) appears on 48 US grants and 12 published applications in this corpus.
Search patents in H04Q- Granted patents
- 48
- Published applications
- 12
- Assignees
- 30
- Inventors
- 104
- Latest grant
- 8 Apr 2008
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 3 | 0 |
| 1998 | 6 | 0 |
| 1999 | 2 | 0 |
| 2000 | 7 | 0 |
| 2001 | 3 | 4 |
| 2002 | 3 | 2 |
| 2003 | 4 | 2 |
| 2004 | 0 | 1 |
| 2005 | 3 | 1 |
| 2006 | 4 | 0 |
| 2007 | 1 | 1 |
| 2008 | 1 | 0 |
| 2009 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Telecommunication system and method for transmitting data8 Apr 2008US 7,356,037 B1Ericsson Inc.
- AIN call queuing12 Jun 2007US 7,231,031 B2Qwest Communications International Inc.
- Call queuing service termination5 Dec 2006US 7,145,905 B2Qwest Communications International Inc.
- Platform for rapid development of telecommunications services28 Nov 2006US 7,142,655 B2SBC Properties, L.P.
- Call queuing notification11 Jul 2006US 7,076,044 B2Qwest Communications International Inc.
- Telephone Communication Monitoring Device and Method27 Aug 2009US 2009/0213742 A1Neuroware Corporation
- Platform for rapid development of telecommunication services15 Feb 2007US 2007/0036315 A1SBC Properties, L.P.
- Method for transferring information and associated network transition units24 Feb 2005US 2005/0041633 A1Siemens Aktiengesellschaft
- Communications assistance for law enforcement act (CALEA) device4 Nov 2004US 2004/0218731 A1
- Transosing a bi-directional s2m data stream for transmission via a low-voltage network7 Aug 2003US 2003/0149784 A1
Most cited
By later US patents
- Method and apparatus for interconnecting ATM-attached hosts with telephone-network attached hosts227US 5,737,333 AAT&T Corp. · 1998
- Multimedia system125US 5,754,784 AAT&T Corp. · 1998
- Communicating between diverse communications environments124US 5,764,750 ALucent Technologies Inc. · 1998
- Multimedia conference call providing adjustable bandwidth for individual communication terminals73US 5,590,127 ALucent Technologies Inc. · 1996
- System and method for routing telephone calls71US 5,844,896 AMediaOne Group, Inc. · 1998