H04Q 2213/13334
Key telephone systems
H04Q2213/13334 (Key telephone systems) appears on 46 US grants and 18 published applications in this corpus.
Search patents in H04Q- Granted patents
- 46
- Published applications
- 18
- Assignees
- 25
- Inventors
- 78
- Latest grant
- 4 Oct 2016
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 4 | 6 |
| 2002 | 8 | 1 |
| 2003 | 3 | 0 |
| 2004 | 2 | 0 |
| 2005 | 1 | 2 |
| 2006 | 2 | 2 |
| 2007 | 3 | 1 |
| 2008 | 2 | 4 |
| 2009 | 1 | 0 |
| 2010 | 1 | 0 |
| 2011 | 1 | 0 |
| 2012 | 1 | 1 |
| 2013 | 1 | 1 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Systems and methods for thermal mitigation with multiple processors4 Oct 2016US 9,459,879 B2QUALCOMM Incorporated
- Power saving for broadband communications devices12 May 2015US 9,032,231 B1ARRIS Enterprises LLC
- Telephone communication system over a single telephone line15 Oct 2013US 8,559,422 B2Mosaid Technologies Incorporated
- Telephone communication system over a single telephone line17 Jul 2012US 8,223,800 B2Mosaid Technologies Incorporated
- Telephone communication system over a single telephone line16 Aug 2011US 8,000,349 B2Mosaid Technologies Incorporated
- Systems and methods for thermal mitigation with multiple processors12 Dec 2013US 2013/0332720 A1QUALCOMM Incorporated
- Telephone communication system over a single telephone line6 Dec 2012US 2012/0307990 A1Mosaid Technologies Incorporated
- Telephone communication system over a single telephone line25 Sep 2008US 2008/0232579 A1Serconet Ltd.
- System and method for selectively coupling various communication devices through common channel4 Sep 2008US 2008/0212570 A1
- Telephone communication system over a single telephone line21 Feb 2008US 2008/0043646 A1Serconet Ltd.
Most cited
By later US patents
- Methods and apparatus for originating voice calls199US 6,430,282 B1Nortel Networks Limited · 2002
- Telephone communication system over a single telephone line157US 7,106,721 B1Serconet Ltd. · 2006
- Video telephone for the real-time exchange of image and other data through a digital communications network135US 6,034,715 AHitachi, Ltd. · 2000
- Digital key telephone system and extension terminal device thereof95US 6,496,576 B2Kabushiki Kaisha Toshiba · 2002
- Video telephone85US 5,587,735 AHitachi, Ltd. · 1996