H04M 19/04
The ringing-current being generated at the substations
Official title: the ringing-current being generated at the substations
H04M19/04 (The ringing-current being generated at the substations) appears on 2,182 US grants and 2,259 published applications in this corpus.
Search patents in H04M- Granted patents
- 2,182
- Published applications
- 2,259
- Assignees
- 633
- Inventors
- 4,182
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 16 | 0 |
| 1978 | 8 | 0 |
| 1979 | 7 | 0 |
| 1980 | 4 | 0 |
| 1981 | 5 | 0 |
| 1982 | 9 | 0 |
| 1983 | 9 | 0 |
| 1984 | 5 | 0 |
| 1985 | 9 | 0 |
| 1986 | 8 | 0 |
| 1987 | 8 | 0 |
| 1988 | 5 | 0 |
| 1989 | 7 | 0 |
| 1990 | 11 | 0 |
| 1991 | 5 | 0 |
| 1992 | 10 | 0 |
| 1993 | 9 | 0 |
| 1994 | 12 | 0 |
| 1995 | 19 | 0 |
| 1996 | 22 | 0 |
| 1997 | 30 | 0 |
| 1998 | 25 | 0 |
| 1999 | 39 | 0 |
| 2000 | 34 | 0 |
| 2001 | 45 | 27 |
| 2002 | 31 | 54 |
| 2003 | 33 | 66 |
| 2004 | 42 | 92 |
| 2005 | 33 | 106 |
| 2006 | 78 | 129 |
| 2007 | 63 | 125 |
| 2008 | 53 | 119 |
| 2009 | 48 | 125 |
| 2010 | 53 | 109 |
| 2011 | 84 | 93 |
| 2012 | 104 | 78 |
| 2013 | 123 | 86 |
| 2014 | 107 | 107 |
| 2015 | 110 | 166 |
| 2016 | 129 | 151 |
| 2017 | 135 | 162 |
| 2018 | 136 | 113 |
| 2019 | 132 | 95 |
| 2020 | 86 | 85 |
| 2021 | 89 | 56 |
| 2022 | 49 | 33 |
| 2023 | 36 | 24 |
| 2024 | 26 | 31 |
| 2025 | 27 | 19 |
| 2026 | 8 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H04M 19/047Vibrating means for incoming calls462
- H04M 19/041Encoding the ringing signal, i.e. providing distinctive or selective ringing capability342
- H04M 19/048Arrangements providing optical indication of the incoming call244
- H04M 19/042With variable loudness of the ringing tone166
- H04M 19/045Call privacy arrangements88
Recent patents
- 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
- Distributed call conflict processing method and system, electronic device, and storage medium19 May 2026US 12,634,386 B2Honor Device Co., Ltd.
- Incoming call reminder system and method and electronic device utilizing vibration or ringing reminder31 Mar 2026US 12,592,992 B2Honor Device Co., Ltd.
- Processing haptic information17 Sep 2026US 2026/0281253 A1Tencent Technology (Shenzhen) Company Limited
- 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.
- Electronic device, method, and non-transitory storage medium for providing virtual vibration sound2 Apr 2026US 2026/0093330 A1Samsung Electronics Co., Ltd.
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
- Communication device495US 8,676,273 B12014
- Personal communicator having improved contrast control for a liquid crystal, touch sensitive display413US 5,422,656 AInternational Business Machines Corporation · 1995