H04M 2215/7442
Roaming
H04M2215/7442 (Roaming) appears on 196 US grants and 205 published applications in this corpus.
Search patents in H04M- Granted patents
- 196
- Published applications
- 205
- Assignees
- 109
- Inventors
- 420
- Latest grant
- 26 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 4 | 0 |
| 2001 | 7 | 8 |
| 2002 | 11 | 11 |
| 2003 | 10 | 21 |
| 2004 | 13 | 20 |
| 2005 | 11 | 24 |
| 2006 | 13 | 12 |
| 2007 | 21 | 16 |
| 2008 | 6 | 16 |
| 2009 | 9 | 18 |
| 2010 | 7 | 15 |
| 2011 | 13 | 8 |
| 2012 | 15 | 8 |
| 2013 | 14 | 6 |
| 2014 | 8 | 2 |
| 2015 | 7 | 4 |
| 2016 | 1 | 2 |
| 2017 | 4 | 2 |
| 2018 | 5 | 2 |
| 2019 | 2 | 4 |
| 2020 | 3 | 3 |
| 2021 | 2 | 1 |
| 2022 | 2 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Enhanced roaming services and converged carrier networks with device assisted services and a proxy26 Aug 2025US 12,401,984 B2Headwater Research LLC
- Trigger management for roaming calls in IMS networks22 Nov 2022US 11,510,034 B2T-Mobile USA, Inc.
- Enhanced roaming services and converged carrier networks with device assisted services and a proxy9 Aug 2022US 11,412,366 B2Headwater Research LLC
- Mobile communication system and communication method14 Sep 2021US 11,122,474 B2NEC Corporation
- Enhanced communication platform and related communication method using the platform12 Jan 2021US 10,891,598 B2Upaid Systems, Ltd.
- Enhanced Roaming Services and Converged Carrier Networks with Device Assisted Services and a Proxy20 Nov 2025US 2025/0358604 A1Headwater Research LLC
- Enhanced Roaming Services and Converged Carrier Networks with Device Assisted Services and a Proxy17 Nov 2022US 2022/0369090 A1Headwater Research LLC
- Trigger management for roaming calls in ims networks20 May 2021US 2021/0152988 A1T-Mobile USA, Inc.
- Assistance to mobile operators in the provision of data services in the visited mobile network1 Oct 2020US 2020/0314605 A1UAB Demolita
- Mobile communication system and communication method11 Jun 2020US 2020/0187065 A1NEC Corporation
Most cited
By later US patents
- Enhanced communication platform and related communication method using the platform359US 6,381,316 B2Unpaid Systems, Ltd. · 2002
- Prepay telecommunications system322US 6,058,300 ANational Telemanagement Corporation · 2000
- System, method, and computer program product for charging a roaming network for a chargeable event249US 7,801,523 B1Amdocs Software Systems Limited · 2010
- Roaming across different access mechanisms and network technologies249US 7,877,090 B2Oracle International Corporation · 2011
- Online charging for sessions that are transferred between network domains224US 8,483,135 B2Alcatel Lucent · 2013