H04M 3/4931
Directory assistance systems
Official title: {Directory assistance systems}
H04M3/4931 (Directory assistance systems) appears on 1,150 US grants and 1,239 published applications in this corpus.
Search patents in H04M- Granted patents
- 1,150
- Published applications
- 1,239
- Assignees
- 454
- Inventors
- 2,025
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 4 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 6 | 0 |
| 1995 | 8 | 0 |
| 1996 | 8 | 0 |
| 1997 | 6 | 0 |
| 1998 | 30 | 0 |
| 1999 | 44 | 0 |
| 2000 | 29 | 0 |
| 2001 | 34 | 19 |
| 2002 | 36 | 80 |
| 2003 | 46 | 74 |
| 2004 | 35 | 85 |
| 2005 | 37 | 94 |
| 2006 | 60 | 76 |
| 2007 | 35 | 87 |
| 2008 | 37 | 79 |
| 2009 | 37 | 94 |
| 2010 | 31 | 50 |
| 2011 | 58 | 56 |
| 2012 | 70 | 44 |
| 2013 | 69 | 44 |
| 2014 | 68 | 41 |
| 2015 | 59 | 35 |
| 2016 | 36 | 23 |
| 2017 | 35 | 26 |
| 2018 | 21 | 19 |
| 2019 | 25 | 33 |
| 2020 | 39 | 37 |
| 2021 | 38 | 78 |
| 2022 | 29 | 24 |
| 2023 | 21 | 13 |
| 2024 | 19 | 14 |
| 2025 | 12 | 9 |
| 2026 | 5 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Automatic routing using search results18 Aug 2026US 12,711,188 B2Google Inc.
- Automatic after call application download platform18 Aug 2026US 12,711,522 B2OnePIN, Inc.
- Arrangements for detecting bi-directional artificial intelligence (AI) voice communications and negotiating direct digital communications19 May 2026US 12,634,369 B2Capital One Services, LLC
- System, method, and apparatus for common contact management12 May 2026US 12,627,754 B2
- Method and system for directory number management6 Jan 2026US 12,519,885 B2JPMorgan Chase Bank, N. A.
- Automatic after call survey and campaign-based customer feedback collection platform30 Apr 2026US 2026/0120143 A1OnePIN, Inc.
- Computing device and system for rendering contact information that is retrieved from a network service23 Apr 2026US 2026/0113404 A1Neustar, Inc.
- Systems and Methods for Automated Call Acceptance of Facility-Originated Telephone Calls with Prerecorded Preambles26 Mar 2026US 2026/0089257 A1
- System and method for personalized call management and talk automation19 Mar 2026US 2026/0081993 A1Mitel Networks Corporation
- Dynamic interactive voice response (ivr) route estimation to reduce telephone network traffic5 Feb 2026US 2026/0039750 A1Google Inc.
Most cited
By later US patents
- Providing collaborative installation management in a network-based supply chain environment1,805US 6,606,744 B1Accenture LLP · 2003
- System, method and article of manufacture for communications utilizing calling, plans in a hybrid network1,175US 5,867,495 AMCI Communications Corporations · 1999
- System, method and article of manufacture with integrated video conferencing billing in a communication system architecture751US 5,867,494 AMCI Communication Corporation · 1999
- Network-based multimedia communications and directory system and method of operation610US 5,740,231 AOctel Communications Corporation · 1998
- System and method for providing an on-line directory service580US 5,850,433 ASprint Communication Company L.P. · 1998