H04M 3/26
With means for applying test signals or for measuring
Official title: with means for applying test signals {or for measuring}
H04M3/26 (With means for applying test signals or for measuring) appears on 1,865 US grants and 1,121 published applications in this corpus.
Search patents in H04M- Granted patents
- 1,865
- Published applications
- 1,121
- Assignees
- 612
- Inventors
- 2,905
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 15 | 0 |
| 1978 | 12 | 0 |
| 1979 | 9 | 0 |
| 1980 | 11 | 0 |
| 1981 | 13 | 0 |
| 1982 | 15 | 0 |
| 1983 | 21 | 0 |
| 1984 | 26 | 0 |
| 1985 | 28 | 0 |
| 1986 | 32 | 0 |
| 1987 | 32 | 0 |
| 1988 | 21 | 0 |
| 1989 | 27 | 0 |
| 1990 | 18 | 0 |
| 1991 | 20 | 0 |
| 1992 | 14 | 0 |
| 1993 | 17 | 0 |
| 1994 | 24 | 0 |
| 1995 | 46 | 0 |
| 1996 | 35 | 0 |
| 1997 | 41 | 0 |
| 1998 | 54 | 0 |
| 1999 | 55 | 0 |
| 2000 | 40 | 0 |
| 2001 | 64 | 20 |
| 2002 | 68 | 78 |
| 2003 | 65 | 58 |
| 2004 | 72 | 77 |
| 2005 | 56 | 79 |
| 2006 | 69 | 55 |
| 2007 | 65 | 65 |
| 2008 | 41 | 64 |
| 2009 | 54 | 56 |
| 2010 | 58 | 58 |
| 2011 | 41 | 37 |
| 2012 | 69 | 47 |
| 2013 | 59 | 50 |
| 2014 | 75 | 58 |
| 2015 | 62 | 60 |
| 2016 | 68 | 50 |
| 2017 | 39 | 35 |
| 2018 | 37 | 25 |
| 2019 | 39 | 21 |
| 2020 | 26 | 23 |
| 2021 | 20 | 21 |
| 2022 | 18 | 33 |
| 2023 | 24 | 16 |
| 2024 | 17 | 16 |
| 2025 | 13 | 12 |
| 2026 | 11 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Broadband access management systems and methods1 Sep 2026US 12,726,566 B2Epic Lane Networks, LP
- Detecting a disconnect at a DSLAM14 Jul 2026US 12,684,062 B2British Telecommunications Public Ltd.Co.
- Bot factory environment23 Jun 2026US 12,664,005 B2American Express Travel Related Services Company, Inc.
- Remote verification of the condition of a mobile device9 Jun 2026US 12,652,539 B2Assurant, Inc.
- Modular technologies for servicing telephony systems2 Jun 2026US 12,647,468 B2Cdw LLC
- Methods, controllers, and machine-readable storage media for automated commissioning of equipment8 Oct 2026US 2026/0313820 A1PassiveLogic, Inc.
- Bot factory environment1 Oct 2026US 2026/0299977 A1American Express Travel Related Services Company, Inc.
- Method for managing a test of the quality of a telephone communication link13 Aug 2026US 2026/0238720 A1
- System for supporting in-field testing of links of a communication network25 Jun 2026US 2026/0180888 A1Fibercop S.P.A.
- Systems for call monitoring and associated methods using call arrival intervals23 Apr 2026US 2026/0113401 A1Avoxi, Inc.
Most cited
By later US patents
- Skills-based scheduling for telephone call centers370US 6,044,355 AIEX Corporation · 2000
- Communications network state and topology monitor285US 5,049,873 ANetwork Equipment Technologies, Inc. · 1991
- Detection of bridge tap using frequency domain analysis258US 6,177,801 B1Sunrise Telecom Incorporated · 2001
- On demand plug-in jack card and monitor frame252US 5,685,741 AADC Telecommunications, Inc. · 1997
- Pressure alarms and reports system module for proactive maintenance application234US 6,771,739 B1BellSouth Intellectual Property Corporation · 2004