H04M 3/02
Calling substations
Official title: Calling substations, e.g. by ringing (selective calling H04Q)
H04M3/02 (Calling substations) appears on 705 US grants and 707 published applications in this corpus.
Search patents in H04M- Granted patents
- 705
- Published applications
- 707
- Assignees
- 325
- Inventors
- 1,267
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 3 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 14 | 0 |
| 2000 | 8 | 0 |
| 2001 | 6 | 4 |
| 2002 | 9 | 13 |
| 2003 | 15 | 24 |
| 2004 | 19 | 35 |
| 2005 | 12 | 23 |
| 2006 | 22 | 38 |
| 2007 | 24 | 56 |
| 2008 | 15 | 37 |
| 2009 | 17 | 51 |
| 2010 | 23 | 44 |
| 2011 | 28 | 24 |
| 2012 | 38 | 35 |
| 2013 | 74 | 44 |
| 2014 | 51 | 33 |
| 2015 | 37 | 59 |
| 2016 | 52 | 51 |
| 2017 | 50 | 32 |
| 2018 | 44 | 23 |
| 2019 | 24 | 12 |
| 2020 | 18 | 14 |
| 2021 | 16 | 13 |
| 2022 | 13 | 14 |
| 2023 | 16 | 7 |
| 2024 | 11 | 15 |
| 2025 | 12 | 4 |
| 2026 | 7 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Dynamic direction of incoming calls29 Sep 2026US 12,750,442 B18x8, Inc.
- Incoming call reminder method and electronic device16 Jun 2026US 12,659,403 B2Honor Device Co., Ltd.
- Telephone exchange apparatus, telephone system, telephone exchange method, and program9 Jun 2026US 12,652,349 B2NEC Platforms, Ltd.
- Information processing apparatus, information processing system, non-transitory computer readable medium storing information processing program, and information processing method2 Jun 2026US 12,647,514 B2FUJIFILM Business Innovation Corp.
- Incoming call reminder system and method and electronic device utilizing vibration or ringing reminder31 Mar 2026US 12,592,992 B2Honor Device Co., Ltd.
- Systems for identifying the answering party of an automated voice call12 Feb 2026US 2026/0046360 A1Capital One Services, LLC
- Automatic silent mode exception according to a trusted caller29 Jan 2026US 2026/0032193 A1Microsoft Technology Licensing, LLC
- Notification system, notification method, and non-transitory computer readable medium storing program13 Nov 2025US 2025/0349312 A1NEC Corporation
- Method for responding to incoming call, corresponding terminal, and communication system6 Nov 2025US 2025/0343857 A1Honor Device Co., Ltd.
- Systems and methods for handling communications during user operation of a motor vehicle26 Jun 2025US 2025/0211957 A1State Farm Mutual Automobile Insurance Company
Most cited
By later US patents
- Method and system for event notifications285US 8,068,604 B2Computer Product Introductions Corporation · 2011
- Personal alerting apparatus and methods233US 6,703,930 B2Hewlett-Packard Development Company, L. P. · 2004
- Negotiated routing in telephony systems226US 7,231,032 B2Genesys Telecommunications Laboratories, Inc. · 2007
- Audio caller identification206US 7,012,999 B2BellSouth Intellectual Property Corporation · 2006
- Source audio identifiers for digital communications186US 7,644,166 B2AOL Inc. · 2010