H04Q 2213/172
Supervisory signals
H04Q2213/172 (Supervisory signals) appears on 8 US grants and 2 published applications in this corpus.
Search patents in H04Q- Granted patents
- 8
- Published applications
- 2
- Assignees
- 5
- Inventors
- 14
- Latest grant
- 18 Jan 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 1 | 1 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Transmission system, transmission device, and transmission method18 Jan 2022US 11,228,822 B2Fujitsu Limited
- Transmission system, transmission device, and transmission method26 Jan 2021US 10,904,648 B2Fujitsu Limited
- Communication apparatus receiving information from portable information medium30 Dec 1997US 5,703,936 ACanon Kabushiki Kaisha
- Information display provided to calling party4 Mar 1997US 5,608,788 ALucent Technologies Inc.
- Communication terminal and the method using the same20 Jun 1995US 5,426,692 ACanon Kabushiki Kaisha
Most cited
By later US patents
- Information display provided to calling party125US 5,608,788 ALucent Technologies Inc. · 1997
- Interface for a data telephone and data terminal in a digital telephone system58US 5,317,630 AAT&T Bell Laboratories · 1994
- Communication terminal and the method using the same35US 5,426,692 ACanon Kabushiki Kaisha · 1995
- ISDN terminal equipment control method20US 5,268,904 ARicoh Company, Ltd. · 1993
- Telephone exchange including less display elements than channels17US 5,381,468 ACanon Kabushiki Kaisha · 1995