H04M 3/4234
Remote access to features of pbx or home telephone systems-teleworking in a
Official title: {Remote access to features of PBX or home telephone systems-teleworking in a PBX}
H04M3/4234 (Remote access to features of pbx or home telephone systems-teleworking in a) appears on 226 US grants and 199 published applications in this corpus.
Search patents in H04M- Granted patents
- 226
- Published applications
- 199
- Assignees
- 108
- Inventors
- 364
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 6 | 0 |
| 2000 | 0 | 0 |
| 2001 | 8 | 2 |
| 2002 | 2 | 15 |
| 2003 | 9 | 11 |
| 2004 | 9 | 8 |
| 2005 | 5 | 13 |
| 2006 | 11 | 14 |
| 2007 | 14 | 20 |
| 2008 | 8 | 15 |
| 2009 | 9 | 9 |
| 2010 | 12 | 15 |
| 2011 | 14 | 21 |
| 2012 | 24 | 9 |
| 2013 | 23 | 11 |
| 2014 | 13 | 7 |
| 2015 | 12 | 9 |
| 2016 | 10 | 4 |
| 2017 | 10 | 6 |
| 2018 | 5 | 1 |
| 2019 | 4 | 3 |
| 2020 | 2 | 1 |
| 2021 | 2 | 0 |
| 2022 | 2 | 2 |
| 2023 | 1 | 0 |
| 2024 | 0 | 1 |
| 2025 | 2 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Wireless security network and communication methods23 Jun 2026US 12,666,352 B2A9 com, Inc.
- Device management system for upgrading telephony device firmware5 Aug 2025US 12,381,779 B2Zoom Communications, Inc.
- Hybrid cloud PBX11 Feb 2025US 12,225,162 B2
- Virtual telephone extension15 Aug 2023US 11,729,601 B18x8, Inc.
- Method of configuring a private branch exchange remotely8 Nov 2022US 11,496,622 B2
- Device Management System1 Jan 2026US 2026/0005921 A1Zoom Communications, Inc.
- Hybrid Cloud PBX16 Oct 2025US 2025/0324000 A1
- Device Management System For Upgrading Telephony Device Firmware8 Feb 2024US 2024/0048440 A1Zoom Video Communications, Inc.
- Hybrid Cloud PBX24 Nov 2022US 2022/0377179 A1
- Method of configuring a private branch exchange remotely26 May 2022US 2022/0166873 A1
Most cited
By later US patents
- Area wide centrex423US 5,247,571 ABell Atlantic Network Services, Inc. · 1993
- System and method for providing a remote user with a virtual presence to an office324US 5,889,845 AData Race, Inc. · 1999
- Method and apparatus for providing personalized telephone subscriber features at remote locations290US 4,899,373 AAmerican Telephone and Telegraph Company, AT&T Bell Laboratories · 1990
- Systems and methods for handling a plurality of communications275US 7,962,644 B1Oracle International Corporation · 2011
- System and method for providing a remote user with a virtual presence to an office258US 5,764,639 A1998