H04J 3/1641
Hierarchical systems
Official title: {Hierarchical systems}
H04J3/1641 (Hierarchical systems) appears on 62 US grants and 11 published applications in this corpus.
Search patents in H04J- Granted patents
- 62
- Published applications
- 11
- Assignees
- 39
- Inventors
- 128
- Latest grant
- 17 Mar 2015
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 4 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 4 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 4 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 0 |
| 2002 | 0 | 2 |
| 2003 | 3 | 4 |
| 2004 | 3 | 1 |
| 2005 | 5 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 1 |
| 2009 | 2 | 2 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 1 | 0 |
| 2014 | 1 | 0 |
| 2015 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Multiple E-carrier transport over DSL17 Mar 2015US 8,982,913 B2ADC Telecommunications, Inc.
- Memory access system and method4 Nov 2014US 8,879,435 B1Mindspeed Technologies, Inc.
- Method and apparatus for searching frame alignment with false alignment protection3 Dec 2013US 8,601,345 B1Tellabs Operations, Inc.
- System and method for multiplexing fractional TDM frames25 Dec 2012US 8,340,118 B2ADC DSL Systems, Inc.
- Apparatus and method for transmitting a DS3 signal over multiple twisted pair conductors15 Jun 2010US 7,738,511 B2Hubbell Incorporated
- System and method for multiplexing fractional tdm frames26 Nov 2009US 2009/0290583 A1ADC DSL Systems, Inc.
- Multiple e-carrier transport over dsl26 Nov 2009US 2009/0290603 A1ADC DSL Systems, Inc.
- Method and system for aggregating multiple small packets in wireless communication14 Aug 2008US 2008/0192774 A1Samsung Electronics Co., Ltd.
- Apparatus and method for transmitting a DS3 signal over multiple twisted pair conductors13 Jan 2005US 2005/0008041 A1Hubbell Incorporated
- Method and apparatus for deframing signals15 Apr 2004US 2004/0073714 A1Redback Networks Inc.
Most cited
By later US patents
- Method of and apparatus for multiplexing and demultiplexing digital signal streams82US 6,157,659 ANortel Networks Limited · 2000
- Network multiplex structure62US 4,667,324 ANorthern Telecom Limited · 1987
- Method and apparatus for packetizing data into a data stream60US 6,275,505 B1Alcatel Canada Inc. · 2001
- Synchronous plesiochronous digital hierarchy transmission systems54US 5,940,456 AUT Starcom, Inc. · 1999
- System and method for the compression and transportation of non frame relay data over a frame relay network47US 6,134,245 AParadyne Corporation · 2000