H04M 3/42297
With number portability
Official title: {with number portability}
H04M3/42297 (With number portability) appears on 225 US grants and 149 published applications in this corpus.
Search patents in H04M- Granted patents
- 225
- Published applications
- 149
- Assignees
- 117
- Inventors
- 387
- Latest grant
- 16 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 8 | 0 |
| 1998 | 9 | 0 |
| 1999 | 21 | 0 |
| 2000 | 13 | 0 |
| 2001 | 10 | 0 |
| 2002 | 5 | 4 |
| 2003 | 8 | 9 |
| 2004 | 10 | 5 |
| 2005 | 6 | 10 |
| 2006 | 10 | 10 |
| 2007 | 5 | 4 |
| 2008 | 2 | 12 |
| 2009 | 4 | 7 |
| 2010 | 8 | 10 |
| 2011 | 12 | 6 |
| 2012 | 10 | 4 |
| 2013 | 12 | 5 |
| 2014 | 10 | 6 |
| 2015 | 3 | 2 |
| 2016 | 3 | 13 |
| 2017 | 6 | 7 |
| 2018 | 13 | 7 |
| 2019 | 8 | 9 |
| 2020 | 5 | 3 |
| 2021 | 5 | 4 |
| 2022 | 5 | 6 |
| 2023 | 5 | 4 |
| 2024 | 5 | 1 |
| 2025 | 3 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Method and system for determining a mobile network operator identifier16 Dec 2025US 12,500,978 B2TC France S.A.S.
- Telephone number deactivation process1 Jul 2025US 12,348,673 B2International Business Machines Corporation
- Method for managing an unallocated telephone number in a communication network, method for processing a request for allocating a telephone number, corresponding devices, item of communication equipment, system and computer programs6 May 2025US 12,294,670 B2Orange
- Maintaining access to services via SIM card24 Dec 2024US 12,177,768 B2Apple Inc.
- Method and apparatus for detecting SMS parameter manipulation17 Sep 2024US 12,095,942 B2AB Handshake Corporation
- Numbering system and numbering method9 Jan 2025US 2025/0016266 A1Soracom, Inc.
- Telephone number deactivation process15 Aug 2024US 2024/0275883 A1International Business Machines Corporation
- Maintaining access to services via sim card23 Nov 2023US 2023/0379805 A1Apple Inc.
- Method and system for determining a mobile network operator identifier31 Aug 2023US 2023/0275992 A1EXFO Solutions SAS
- Method for managing an unallocated telephone number in a communication network, method for processing a request for allocating a telephone number, corresponding devices, item of communication equipment, system and computer programs8 Jun 2023US 2023/0179696 A1Orange
Most cited
By later US patents
- Internet telephone service510US 6,069,890 ABell Atlantic Network Services, Inc. · 2000
- Telecommunication number portability213US 6,021,126 ABell Atlantic Network Services, Inc. · 2000
- System connection adapter and terminal211US 6,999,576 B2Verizon Services Corp. · 2006
- Telecommunications custom calling services194US 6,014,379 ABell Atlantic Network Services, Inc. · 2000
- Line number porting for mobile devices158US 8,204,479 B2RingCentral, Inc. · 2012