H04Q 2213/13367
Hierarchical multiplexing, add-drop multiplexing
H04Q2213/13367 (Hierarchical multiplexing, add-drop multiplexing) appears on 139 US grants and 67 published applications in this corpus.
Search patents in H04Q- Granted patents
- 139
- Published applications
- 67
- Assignees
- 71
- Inventors
- 306
- Latest grant
- 30 Jan 2018
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 9 | 0 |
| 1996 | 4 | 0 |
| 1997 | 5 | 0 |
| 1998 | 6 | 0 |
| 1999 | 0 | 0 |
| 2000 | 7 | 0 |
| 2001 | 12 | 8 |
| 2002 | 10 | 19 |
| 2003 | 6 | 10 |
| 2004 | 15 | 1 |
| 2005 | 11 | 7 |
| 2006 | 15 | 5 |
| 2007 | 7 | 1 |
| 2008 | 5 | 3 |
| 2009 | 4 | 2 |
| 2010 | 7 | 5 |
| 2011 | 3 | 0 |
| 2012 | 1 | 0 |
| 2013 | 1 | 2 |
| 2014 | 1 | 2 |
| 2015 | 0 | 1 |
| 2016 | 2 | 1 |
| 2017 | 2 | 0 |
| 2018 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Apparatus and methods for multi-stage multiplexing in a network30 Jan 2018US 9,883,219 B2Time Warner Cable Enterprises LLC
- Frame converter and frame conversion method12 Sep 2017US 9,762,986 B2Fujitsu Limited
- Wavelength multiplexer, and method and program for identifying failed portion16 May 2017US 9,654,850 B2NEC Corporation
- Persistent scheduling method and apparatus based on semi-grouping and statistically multiplexing13 Sep 2016US 9,445,167 B2Alcatel Lucent
- Line switching device1 Mar 2016US 9,277,299 B2Fujitsu Limited
- Apparatus and method for transmitting error occurrence information to respective end nodes terminating paths25 Aug 2016US 2016/0248623 A1Fujitsu Limited
- Wavelength multiplexer, and method and program for identifying failed portion30 Jul 2015US 2015/0215687 A1NEC Corporation
- Apparatus and methods for multi-stage multiplexing in a network16 Oct 2014US 2014/0310760 A1Time Warner Cable Enterprises LLC
- Frame converter and frame conversion method1 May 2014US 2014/0119733 A1Fujitsu Limited
- Line switching device18 Apr 2013US 2013/0094805 A1Fujitsu Limited
Most cited
By later US patents
- Cable connected wan interconnectivity services for corporate telecommuters702US 6,452,923 B1AT&T Corp. · 2002
- Coaxial cable/twisted pair fed, integrated residence gateway controlled, set-top box537US 6,510,152 B1AT&T Corp. · 2003
- Network server platform for internet, JAVA server and video application server365US 6,044,403 AAT&T Corp. · 2000
- Apparatus and methods for multi-stage multiplexing in a network293US 7,602,820 B2Time Warner Cable Inc. · 2009
- Coaxial cable/twisted pair cable telecommunications network architecture253US 6,546,016 B1AT&T Corp. · 2003