H04M 9/02
Involving a common line for all parties
Official title: involving a common line for all parties
H04M9/02 (Involving a common line for all parties) appears on 346 US grants and 210 published applications in this corpus.
Search patents in H04M- Granted patents
- 346
- Published applications
- 210
- Assignees
- 143
- Inventors
- 488
- Latest grant
- 23 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 6 | 0 |
| 1978 | 4 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 4 | 0 |
| 1983 | 3 | 0 |
| 1984 | 3 | 0 |
| 1985 | 9 | 0 |
| 1986 | 8 | 0 |
| 1987 | 10 | 0 |
| 1988 | 17 | 0 |
| 1989 | 10 | 0 |
| 1990 | 7 | 0 |
| 1991 | 10 | 0 |
| 1992 | 6 | 0 |
| 1993 | 8 | 0 |
| 1994 | 4 | 0 |
| 1995 | 9 | 0 |
| 1996 | 10 | 0 |
| 1997 | 6 | 0 |
| 1998 | 20 | 0 |
| 1999 | 8 | 0 |
| 2000 | 5 | 0 |
| 2001 | 10 | 3 |
| 2002 | 12 | 14 |
| 2003 | 10 | 6 |
| 2004 | 2 | 3 |
| 2005 | 2 | 4 |
| 2006 | 9 | 5 |
| 2007 | 4 | 54 |
| 2008 | 22 | 33 |
| 2009 | 12 | 15 |
| 2010 | 6 | 1 |
| 2011 | 12 | 3 |
| 2012 | 7 | 3 |
| 2013 | 5 | 1 |
| 2014 | 2 | 1 |
| 2015 | 2 | 2 |
| 2016 | 0 | 1 |
| 2017 | 3 | 4 |
| 2018 | 0 | 4 |
| 2019 | 9 | 16 |
| 2020 | 9 | 6 |
| 2021 | 4 | 10 |
| 2022 | 10 | 14 |
| 2023 | 5 | 3 |
| 2024 | 5 | 3 |
| 2025 | 8 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Intercom device and control system23 Sep 2025US 12,425,550 B2Aiphone Co., Ltd.
- Reception control apparatus, reception system, control method, and control program12 Aug 2025US 12,388,931 B2NEC Platforms, Ltd.
- Method, system, and server for reducing noise in a workspace1 Jul 2025US 12,346,754 B2RingCentral, Inc.
- Multiple dwelling house interphone system6 May 2025US 12,294,671 B2Aiphone Co., Ltd.
- Intercommunication system1 Apr 2025US 12,267,374 B2Palomar Products, Inc.
- Method, system, and server for reducing noise in a workspace22 May 2025US 2025/0165317 A1RingCentral, Inc.
- Information processing apparatus and method for calling19 Sep 2024US 2024/0314235 A1Panasonic Intellectual Property Management Co., Ltd.
- Reception control apparatus, reception system, control method, and control program19 Sep 2024US 2024/0314243 A1NEC Platforms, Ltd.
- Intercom device and control system9 May 2024US 2024/0155084 A1Aiphone Co., Ltd.
- Display control method, information processing server, and display terminal17 Aug 2023US 2023/0262203 A1Panasonic Intellectual Property Corporation of America
Most cited
By later US patents
- Network based distributed PBX system407US 5,742,596 APhonet Communication Ltd. · 1998
- Communication network integrating voice data and video with distributed call processing360US 5,341,374 ATriLAN Systems Corporation · 1994
- Transport of payload information and control messages on multiple orthogonal carriers spread throughout substantially all of a frequency bandwith320US 6,275,990 B1ADC Telecommunications, Inc. · 2001
- Channel selection for a hybrid fiber coax network264US 6,334,219 B1ADC Telecommunications, Inc. · 2001
- Telecommunications systems226US 4,578,540 AAT&T Bell Laboratories · 1986