H04M 1/71
Substation extension arrangements
H04M1/71 (Substation extension arrangements) appears on 351 US grants and 157 published applications in this corpus.
Search patents in H04M- Granted patents
- 351
- Published applications
- 157
- Assignees
- 199
- Inventors
- 628
- Latest grant
- 7 Jun 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 7 | 0 |
| 1986 | 1 | 0 |
| 1987 | 6 | 0 |
| 1988 | 4 | 0 |
| 1989 | 7 | 0 |
| 1990 | 6 | 0 |
| 1991 | 16 | 0 |
| 1992 | 12 | 0 |
| 1993 | 13 | 0 |
| 1994 | 8 | 0 |
| 1995 | 7 | 0 |
| 1996 | 15 | 0 |
| 1997 | 11 | 0 |
| 1998 | 23 | 0 |
| 1999 | 25 | 0 |
| 2000 | 11 | 0 |
| 2001 | 13 | 7 |
| 2002 | 13 | 24 |
| 2003 | 17 | 24 |
| 2004 | 18 | 13 |
| 2005 | 15 | 16 |
| 2006 | 21 | 22 |
| 2007 | 12 | 10 |
| 2008 | 13 | 15 |
| 2009 | 6 | 4 |
| 2010 | 9 | 3 |
| 2011 | 6 | 5 |
| 2012 | 7 | 3 |
| 2013 | 10 | 4 |
| 2014 | 1 | 2 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
| 2017 | 3 | 3 |
| 2018 | 2 | 0 |
| 2019 | 1 | 1 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Method, system and apparatus for causing a communication client to join a media-over-packet communication session7 Jun 2022US 11,356,487 B2Bce Inc.
- Method and apparatus for detecting object position relative to antenna arrays of an electronic communication device3 Mar 2020US 10,581,143 B2Motorola Mobility LLC
- Method, system and apparatus for causing a communication client to join a media-over-packet communication session20 Aug 2019US 10,389,762 B2Bce Inc.
- Zone control system23 Oct 2018US 10,110,730 B1
- Method and apparatus for notifying an end user of a messaging event in a multi-user setting25 Sep 2018US 10,084,908 B2AT&T Intellectual Property I, L. P.
- Systems for extending range of a base station via a backhaul network25 Dec 2025US 2025/0393038 A1VTech Telecommunications Limited
- Method, system and apparatus for causing a communication client to join amedia-over-packet communication session5 Dec 2019US 2019/0373025 A1Bce Inc.
- Method and apparatus for detecting object position relative to antenna arrays of an electronic communication device14 Dec 2017US 2017/0356980 A1Motorola Mobility LLC
- Method, device and terminal for processing communication event of terminal11 May 2017US 2017/0134939 A1Yulong Computer Telecommunication Scientific (Shenzhen) Co., Ltd.
- Method And Apparatus For Notifying An End User Of A Messaging Event In A Multi-User Setting27 Apr 2017US 2017/0118327 A1AT&T Intellectual Property I, L. P.
Most cited
By later US patents
- Audio distribution system having programmable zoning features1,660US 5,761,320 AElan Home Systems, L.L.C. · 1998
- Audio distribution system having programmable zoning features1,643US 5,440,644 ASquare D Company · 1995
- Television remote control system for selectively controlling external apparatus through the AC power line257US 4,386,436 ARCA Corporation · 1983
- Multiple access telephone extension systems and methods241US 5,319,634 APhoenix Aktiengesellschaft · 1994
- Telecommunications systems226US 4,578,540 AAT&T Bell Laboratories · 1986