H04M 3/42
Systems providing special services or facilities to subscribers
Official title: Systems providing special services or facilities to subscribers (specially adapted for wireless communication networks H04W4/00)
H04M3/42 (Systems providing special services or facilities to subscribers) appears on 34,726 US grants and 32,315 published applications in this corpus.
Search patents in H04M- Granted patents
- 34,726
- Published applications
- 32,315
- Assignees
- 5,693
- Inventors
- 45,132
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 32 | 0 |
| 1977 | 29 | 0 |
| 1978 | 26 | 0 |
| 1979 | 23 | 0 |
| 1980 | 22 | 0 |
| 1981 | 35 | 0 |
| 1982 | 35 | 0 |
| 1983 | 19 | 0 |
| 1984 | 60 | 0 |
| 1985 | 42 | 0 |
| 1986 | 57 | 0 |
| 1987 | 66 | 0 |
| 1988 | 85 | 0 |
| 1989 | 95 | 0 |
| 1990 | 104 | 0 |
| 1991 | 107 | 0 |
| 1992 | 98 | 0 |
| 1993 | 127 | 0 |
| 1994 | 177 | 0 |
| 1995 | 269 | 0 |
| 1996 | 352 | 0 |
| 1997 | 309 | 0 |
| 1998 | 528 | 0 |
| 1999 | 690 | 0 |
| 2000 | 579 | 0 |
| 2001 | 703 | 324 |
| 2002 | 708 | 1182 |
| 2003 | 726 | 1266 |
| 2004 | 910 | 1349 |
| 2005 | 730 | 1510 |
| 2006 | 1060 | 1479 |
| 2007 | 905 | 1678 |
| 2008 | 783 | 1741 |
| 2009 | 830 | 1555 |
| 2010 | 1006 | 1468 |
| 2011 | 1295 | 1243 |
| 2012 | 1746 | 1310 |
| 2013 | 2050 | 1573 |
| 2014 | 2207 | 1663 |
| 2015 | 1860 | 1701 |
| 2016 | 1756 | 1556 |
| 2017 | 1763 | 1287 |
| 2018 | 1514 | 1165 |
| 2019 | 1510 | 1054 |
| 2020 | 1413 | 1106 |
| 2021 | 1130 | 1155 |
| 2022 | 1027 | 946 |
| 2023 | 1054 | 993 |
| 2024 | 873 | 817 |
| 2025 | 772 | 700 |
| 2026 | 429 | 494 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H04M 3/50Centralised arrangements for answering calls14,200
- H04M 3/487Arrangements for providing information services6,248
- H04M 3/42025Calling or called party identification service6,211
- H04M 3/56Arrangements for connecting several subscribers to a common circuit, i.e. affording conference5,604
- H04M 3/436Arrangements for screening incoming calls , i.e. evaluating the characteristics of a2,982
- H04M 3/42136Administration or customisation of services2,243
- H04M 3/54Arrangements for diverting calls for one subscriber to another predetermined subscriber1,889
- H04M 3/42314In private branch exchanges1,849
All 29 subgroupsShow fewer
- H04M 3/42221Conversation recording systems1,695
- H04M 3/42229Personal communication services, i.e. services related to one subscriber independent of his1,628
- H04M 3/42382Text-based messaging services in telephone networks such as pstn/isdn1,334
- H04M 3/4228In networks1,329
- H04M 3/42365Presence services providing information on the willingness to communicate or the ability1,328
- H04M 3/42348Location-based services which utilize the location information of a target1,293
- H04M 3/428Arrangements for placing incoming calls on hold1,220
- H04M 3/46Arrangements for calling a number of substations in a predetermined sequence until698
- H04M 3/58Arrangements for transferring received calls from one subscriber to another673
- H04M 3/42195Arrangements for calling back a calling subscriber605
- H04M 3/42017Customized ring-back tones492
- H04M 3/48Arrangements for recalling a calling subscriber when the wanted subscriber ceases to457
- H04M 3/42008Systems for anonymous communication between parties423
- H04M 3/42391Where the subscribers are hearing-impaired persons416
- H04M 3/44Additional connecting arrangements for providing access to frequently-wanted subscribers401
- H04M 3/42204Arrangements at the exchange for service or number selection by voice342
- H04M 3/432Arrangements for calling a subscriber at a specific time186
- H04M 3/424Arrangements for automatic redialling135
- H04M 3/42127Systems providing several special services or facilities from groups h04m3/42008 - h04m3/58134
- H04M 3/42187Lines and connections with preferential service105
- H04M 3/42212Call pickup52
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- System and Method for Identity-Weighted Access Token Generation and Capability-Aware Delivery8 Oct 2026US 2026/0313051 A1Taptext LLC
- System, method, apparatus, and computer program product for providing mobile device support services8 Oct 2026US 2026/0313364 A1Assurant, Inc.
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- Using frames for action dialogs1 Oct 2026US 2026/0300421 A1Google Inc.
Most cited
By later US patents
- Method and system for accessing CRM data via voice2,268US 6,804,330 B1Siebel Systems, Inc. · 2004
- System and method for smart scripting call centers and configuration thereof2,196US 6,826,745 B2Siebel Systems, Inc. · 2004
- System and method for generating a dynamic interface via a communications network2,178US 6,850,949 B2Right Now Technologies, Inc. · 2005
- Computer telephony integration hotelling method and system2,172US 6,577,726 B1Siebel Systems, Inc. · 2003
- Personal communications internetworking1,899US 5,742,905 ABell Communications Research, Inc. · 1998