H04M 9/04
Involving a separate line for each pair of parties
Official title: involving a separate line for each pair of parties
H04M9/04 (Involving a separate line for each pair of parties) appears on 12 US grants and 11 published applications in this corpus.
Search patents in H04M- Granted patents
- 12
- Published applications
- 11
- Assignees
- 9
- Inventors
- 26
- Latest grant
- 21 Jan 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 2 |
| 2007 | 0 | 0 |
| 2008 | 1 | 1 |
| 2009 | 1 | 1 |
| 2010 | 0 | 1 |
| 2011 | 1 | 1 |
| 2012 | 2 | 1 |
| 2013 | 1 | 1 |
| 2014 | 1 | 1 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Interface device for intercom access control systems21 Jan 2025US 12,206,826 B2Amazon Technologies, Inc.
- Speaker phone noise suppression method and apparatus10 Mar 2015US 8,976,956 B2Avaya Inc.
- Mobile communication terminal apparatus3 Jun 2014US 8,744,533 B2KYOCERA Corporation
- Mobile communication terminal apparatus2 Jul 2013US 8,478,354 B2KYOCERA Corporation
- In-vehicle handsfree apparatus29 May 2012US 8,190,214 B2Denso Corporation
- Interface Device for Intercom Access Control Systems21 Mar 2024US 2024/0098187 A1Amazon Technologies, Inc.
- Speaker phone noise suppression method and apparatus15 May 2014US 2014/0133647 A1Avaya Inc.
- Mobile communication terminal apparatus10 Oct 2013US 2013/0267281 A1KYOCERA Corporation
- System and Method for Controlling Notification Characteristics of a Mobile Communication Device12 Jul 2012US 2012/0178423 A1Broadcom Corporation
- Mobile communication terminal apparatus29 Dec 2011US 2011/0319141 A1KYOCERA Corporation
Most cited
By later US patents
- Incoming call management in a push-to-talk communication system22US 7,433,680 B2Clarity Communications Systems Inc. · 2008
- Subset switching means in apparatus for a key telephone system for enabling intercom substations to access trunk lines5US 4,081,615 ALitton Business Telephone Systems, Inc. · 1978
- In-vehicle handsfree apparatus5US 8,190,214 B2Denso Corporation · 2012
- Apparatus for a key telephone system for enabling intercom substations to access trunk lines3US 4,016,372 ALitton Business Telephone Systems, Inc. · 1977
- System and method for controlling notification characteristics of a mobile communication device3US 8,140,127 B2Broadcom Corporation · 2012