H04M 17/023
Circuit arrangements
Official title: {Circuit arrangements}
H04M17/023 (Circuit arrangements) appears on 156 US grants and 26 published applications in this corpus.
Search patents in H04M- Granted patents
- 156
- Published applications
- 26
- Assignees
- 68
- Inventors
- 230
- Latest grant
- 5 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 8 | 0 |
| 1978 | 6 | 0 |
| 1979 | 3 | 0 |
| 1980 | 6 | 0 |
| 1981 | 2 | 0 |
| 1982 | 4 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 6 | 0 |
| 1987 | 6 | 0 |
| 1988 | 14 | 0 |
| 1989 | 15 | 0 |
| 1990 | 18 | 0 |
| 1991 | 4 | 0 |
| 1992 | 8 | 0 |
| 1993 | 3 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 6 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 0 |
| 2002 | 1 | 3 |
| 2003 | 0 | 1 |
| 2004 | 1 | 2 |
| 2005 | 1 | 0 |
| 2006 | 0 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 1 | 2 |
| 2018 | 2 | 3 |
| 2019 | 4 | 1 |
| 2020 | 1 | 3 |
| 2021 | 5 | 4 |
| 2022 | 1 | 1 |
| 2023 | 3 | 2 |
| 2024 | 3 | 0 |
| 2025 | 1 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Transaction object reader with configurable amplifier5 May 2026US 12,619,973 B2Block, Inc.
- Transaction object reader with shielding18 Feb 2025US 12,229,748 B1Block, Inc.
- Implementation and communication methods, apparatus and system of virtual subscriber identity module7 May 2024US 11,979,942 B2Huawei Technologies Co., Ltd.
- Signal transmission system and signal transmission method23 Apr 2024US 11,968,324 B2Nippon Telegraph and Telephone Corporation
- Transaction object reader with interposer5 Mar 2024US 11,922,397 B2Block, Inc.
- Transaction object reader with configurable amplifier1 May 2025US 2025/0139607 A1Block, Inc.
- Implementation and communication methods, apparatus and system of virtual subscriber identity module29 Jun 2023US 2023/0209333 A1Huawei Technologies Co., Ltd.
- Transaction object reader with analog and digital signal interface22 Jun 2023US 2023/0196335 A1Block, Inc.
- Signal transmission system and signal transmission method18 Aug 2022US 2022/0263948 A1Nippon Telegraph and Telephone Corporation
- Transaction object reader with analog and digital signal interface21 Oct 2021US 2021/0326541 A1Square, Inc.
Most cited
By later US patents
- Telephone system456US 4,706,275 AAerotel Ltd. · 1987
- Automated public phone control for charge and collect billing389US 4,935,956 ATelequip Ventures, Inc. · 1990
- Automated vending of cellular hand-held telephones and cellular telephone services286US 4,951,308 ACellular Communications Corporation · 1990
- Credit card actuated telecommunication access network251US 4,439,636 A1984
- Method and system for updating a call rating database213US 5,519,769 ARates Technology Inc. · 1996