H04M 9/005
With subscriber controlled access to an exchange line
Official title: {with subscriber controlled access to an exchange line}
H04M9/005 (With subscriber controlled access to an exchange line) appears on 165 US grants and 8 published applications in this corpus.
Search patents in H04M- Granted patents
- 165
- Published applications
- 8
- Assignees
- 78
- Inventors
- 281
- Latest grant
- 21 Jan 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 13 | 0 |
| 1977 | 16 | 0 |
| 1978 | 11 | 0 |
| 1979 | 7 | 0 |
| 1980 | 9 | 0 |
| 1981 | 7 | 0 |
| 1982 | 6 | 0 |
| 1983 | 7 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 11 | 0 |
| 1987 | 7 | 0 |
| 1988 | 4 | 0 |
| 1989 | 5 | 0 |
| 1990 | 3 | 0 |
| 1991 | 8 | 0 |
| 1992 | 5 | 0 |
| 1993 | 4 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 6 | 0 |
| 1997 | 5 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 1 | 2 |
| 2020 | 0 | 0 |
| 2021 | 2 | 0 |
| 2022 | 1 | 2 |
| 2023 | 1 | 0 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Interface device for intercom access control systems21 Jan 2025US 12,206,826 B2Amazon Technologies, Inc.
- Volume control over shared trunk lines in intercom systems8 Aug 2023US 11,722,603 B2Robert Bosch GmbH
- Volume control over shared trunk lines in intercom systems6 Sep 2022US 11,438,461 B2Robert Bosch GmbH
- Talk station for intercom network25 May 2021US 11,019,218 B2Riedel Communications International GmbH
- Intercom network and terminal therefor26 Jan 2021US 10,904,683 B2Riedel Communications International GmbH
- Interface Device for Intercom Access Control Systems21 Mar 2024US 2024/0098187 A1Amazon Technologies, Inc.
- Volume control over shared trunk lines in intercom systems24 Nov 2022US 2022/0377180 A1Robert Bosch GmbH
- Volume control over shared trunk lines in intercom systems21 Apr 2022US 2022/0124202 A1Robert Bosch GmbH
- Speech station for intercom network30 May 2019US 2019/0166239 A1Riedel Communications International GmbH
- Talk station for intercom network30 May 2019US 2019/0166256 A1Riedel Communications International GmbH
Most cited
By later US patents
- Graphics based call management173US 4,653,090 AAmerican Telephone & Telegraph (AT&T) · 1987
- Smart phone integration with computer systems158US 5,799,067 AElonex I. P. Holdings, Ltd. · 1998
- Two wire voice and data subscriber loop134US 4,608,686 AMitel Corporation · 1986
- Telephone system with multiple extension telephones95US 5,090,052 ATandy Corporation · 1992
- Graphical user interface workstation85US 5,309,509 AAT&T Bell Laboratories · 1994