H04M 19/02
Providing ringing current or supervisory tones
Official title: providing ringing current or supervisory tones, e.g. dialling tone or busy tone
H04M19/02 (Providing ringing current or supervisory tones) appears on 2,552 US grants and 2,350 published applications in this corpus.
Search patents in H04M- Granted patents
- 2,552
- Published applications
- 2,350
- Assignees
- 731
- Inventors
- 4,637
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 21 | 0 |
| 1978 | 14 | 0 |
| 1979 | 18 | 0 |
| 1980 | 14 | 0 |
| 1981 | 15 | 0 |
| 1982 | 23 | 0 |
| 1983 | 15 | 0 |
| 1984 | 19 | 0 |
| 1985 | 21 | 0 |
| 1986 | 15 | 0 |
| 1987 | 17 | 0 |
| 1988 | 13 | 0 |
| 1989 | 16 | 0 |
| 1990 | 24 | 0 |
| 1991 | 13 | 0 |
| 1992 | 11 | 0 |
| 1993 | 18 | 0 |
| 1994 | 24 | 0 |
| 1995 | 29 | 0 |
| 1996 | 37 | 0 |
| 1997 | 40 | 0 |
| 1998 | 38 | 0 |
| 1999 | 49 | 0 |
| 2000 | 43 | 0 |
| 2001 | 59 | 29 |
| 2002 | 43 | 64 |
| 2003 | 43 | 78 |
| 2004 | 48 | 103 |
| 2005 | 45 | 113 |
| 2006 | 91 | 139 |
| 2007 | 74 | 130 |
| 2008 | 56 | 124 |
| 2009 | 50 | 126 |
| 2010 | 58 | 112 |
| 2011 | 91 | 99 |
| 2012 | 110 | 80 |
| 2013 | 129 | 89 |
| 2014 | 112 | 109 |
| 2015 | 113 | 169 |
| 2016 | 132 | 153 |
| 2017 | 137 | 163 |
| 2018 | 142 | 115 |
| 2019 | 134 | 96 |
| 2020 | 87 | 85 |
| 2021 | 90 | 57 |
| 2022 | 52 | 33 |
| 2023 | 36 | 24 |
| 2024 | 26 | 32 |
| 2025 | 28 | 20 |
| 2026 | 9 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Device for detection of a clipped ringing signal22 Sep 2026US 12,745,022 B2Nuvoton Technology Corporation
- 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.
- 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
- 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