H04M 3/2209
For lines also used for data transmission
Official title: {for lines also used for data transmission}
H04M3/2209 (For lines also used for data transmission) appears on 336 US grants and 318 published applications in this corpus.
Search patents in H04M- Granted patents
- 336
- Published applications
- 318
- Assignees
- 141
- Inventors
- 530
- Latest grant
- 25 Mar 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 6 | 0 |
| 2000 | 4 | 0 |
| 2001 | 12 | 7 |
| 2002 | 16 | 34 |
| 2003 | 20 | 27 |
| 2004 | 15 | 14 |
| 2005 | 16 | 35 |
| 2006 | 22 | 14 |
| 2007 | 12 | 15 |
| 2008 | 22 | 11 |
| 2009 | 14 | 18 |
| 2010 | 17 | 13 |
| 2011 | 12 | 13 |
| 2012 | 13 | 10 |
| 2013 | 17 | 10 |
| 2014 | 20 | 16 |
| 2015 | 20 | 27 |
| 2016 | 22 | 16 |
| 2017 | 7 | 8 |
| 2018 | 12 | 8 |
| 2019 | 11 | 3 |
| 2020 | 6 | 3 |
| 2021 | 5 | 6 |
| 2022 | 1 | 2 |
| 2023 | 5 | 2 |
| 2024 | 4 | 2 |
| 2025 | 3 | 2 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Telephony web event system and method25 Mar 2025US 12,261,981 B2Twilio Inc.
- Maintaining service availability18 Mar 2025US 12,256,039 B2Salesforce, Inc.
- Dual compatibility phone system18 Feb 2025US 12,231,600 B1Ultratec, Inc.
- Special fraud countermeasure apparatus, special fraud countermeasure method, and special fraud countermeasure program3 Dec 2024US 12,160,541 B2Nippon Telegraph and Telephone Corporation
- Method and system for performance estimation of a communication link26 Mar 2024US 11,943,644 B2Assia Spe, LLC
- Method for managing a test of the quality of a telephone communication link13 Aug 2026US 2026/0238720 A1
- Artificial intelligence based auction bidding system and method thereof26 Mar 2026US 2026/0087545 A1
- Method and system for performance estimation of a communication link24 Apr 2025US 2025/0133429 A1Assia Spe, LLC
- Telephony web event system and method17 Apr 2025US 2025/0126211 A1Twilio Inc.
- Maintaining service availability13 Jun 2024US 2024/0195908 A1Salesforce, Inc.
Most cited
By later US patents
- Redundant video alarm monitoring system249US 6,038,289 ASimplex Time Recorder Company · 2000
- Telephony web event system and method245US 8,964,726 B2Twilio Inc. · 2015
- Apparatus and method for testing and fault isolation in a communication network160US 8,472,327 B2Verizon Business Global LLC · 2013
- Voice and data exchange over a packet based network with fax relay spoofing109US 6,504,838 B1Broadcom Corporation · 2003
- Reducing resource consumption by ACD systems91US 6,327,364 B1Siemens Information and Communication Networks, Inc. · 2001