H04M 19/00
Current supply arrangements for telephone systems
Official title: Current supply arrangements for telephone systems (for selecting-equipment H04Q1/28)
H04M19/00 (Current supply arrangements for telephone systems) appears on 3,733 US grants and 2,925 published applications in this corpus.
Search patents in H04M- Granted patents
- 3,733
- Published applications
- 2,925
- Assignees
- 991
- Inventors
- 6,195
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 28 | 0 |
| 1977 | 45 | 0 |
| 1978 | 27 | 0 |
| 1979 | 25 | 0 |
| 1980 | 29 | 0 |
| 1981 | 36 | 0 |
| 1982 | 48 | 0 |
| 1983 | 40 | 0 |
| 1984 | 47 | 0 |
| 1985 | 53 | 0 |
| 1986 | 51 | 0 |
| 1987 | 38 | 0 |
| 1988 | 36 | 0 |
| 1989 | 50 | 0 |
| 1990 | 44 | 0 |
| 1991 | 30 | 0 |
| 1992 | 29 | 0 |
| 1993 | 43 | 0 |
| 1994 | 52 | 0 |
| 1995 | 49 | 0 |
| 1996 | 56 | 0 |
| 1997 | 68 | 0 |
| 1998 | 72 | 0 |
| 1999 | 76 | 0 |
| 2000 | 70 | 0 |
| 2001 | 84 | 39 |
| 2002 | 70 | 108 |
| 2003 | 88 | 116 |
| 2004 | 83 | 151 |
| 2005 | 80 | 145 |
| 2006 | 127 | 158 |
| 2007 | 103 | 163 |
| 2008 | 72 | 143 |
| 2009 | 69 | 140 |
| 2010 | 76 | 133 |
| 2011 | 105 | 118 |
| 2012 | 130 | 94 |
| 2013 | 152 | 104 |
| 2014 | 131 | 129 |
| 2015 | 127 | 197 |
| 2016 | 155 | 176 |
| 2017 | 168 | 199 |
| 2018 | 170 | 173 |
| 2019 | 187 | 125 |
| 2020 | 120 | 102 |
| 2021 | 103 | 66 |
| 2022 | 64 | 42 |
| 2023 | 49 | 30 |
| 2024 | 31 | 38 |
| 2025 | 35 | 25 |
| 2026 | 12 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H04M 19/02Providing ringing current or supervisory tones2,552
- H04M 19/001Current supply source at the exchanger providing current to substations604
- H04M 19/08Current supply arrangements for telephone systems: with current supply sources at the509
- H04M 19/06In which current supply sources at subordinate switching centres are charged from7
Recent patents
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- Portable device25 Aug 2026US 12,719,973 B2AAC Technologies (Nanjing) Co., Ltd.
- Method and apparatus for providing notification28 Jul 2026US 12,696,239 B2Samsung Electronics Co., Ltd.
- Controlling vibration output from a computing device16 Jun 2026US 12,659,050 B2Comcast Cable Communications, LLC
- Processing haptic information17 Sep 2026US 2026/0281253 A1Tencent Technology (Shenzhen) Company Limited
- Systems and methods for providing voltage boosting to a time domain duplexing radio3 Sep 2026US 2026/0261967 A1Outdoor Wireless Networks LLC
- Method for playing and providing incoming call ringtone, and terminal, server and medium2 Jul 2026US 2026/0189652 A1Zte Corporation
- Electronic device and method of controlling electronic device2 Jul 2026US 2026/0189883 A1Samsung Electronics Co., Ltd.
- Dynamic rewardable activity value determination and allocation30 Apr 2026US 2026/0122176 A1Digital Reef, Inc.
Most cited
By later US patents
- System and method for controlling haptic devices having multiple operational modes1,286US 7,742,036 B2Immersion Corporation · 2010
- Devices using tactile feedback to deliver silent status information1,220US 8,739,033 B2Immersion Corporation · 2014
- Method and apparatus for accessing a contacts database and telephone services702US 7,007,239 B1Palm, Inc. · 2006
- Computer-based method and apparatus for controlling, monitoring, recording and reporting telephone access584US 7,106,843 B1T-Netix, Inc. · 2006
- Communication device495US 8,676,273 B12014