H04Q 1/28
Current-supply circuits or arrangements for selection equipment at exchanges
H04Q1/28 (Current-supply circuits or arrangements for selection equipment at exchanges) appears on 28 US grants and 30 published applications in this corpus.
Search patents in H04Q- Granted patents
- 28
- Published applications
- 30
- Assignees
- 19
- Inventors
- 37
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 1 | 9 |
| 2017 | 1 | 1 |
| 2018 | 5 | 5 |
| 2019 | 7 | 1 |
| 2020 | 3 | 4 |
| 2021 | 4 | 4 |
| 2022 | 0 | 1 |
| 2023 | 2 | 0 |
| 2024 | 3 | 3 |
| 2025 | 1 | 1 |
| 2026 | 1 | 0 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Seafloor observation network-based subsurface buoy device with real-time power supplying and high-speed data transmitting23 Jun 2026US 12,666,178 B2Institute of Acoustics, Chinese Academy of Sciences
- Methods and equipment for reducing power loss in radio systems13 May 2025US 12,301,107 B2Outdoor Wireless Networks LLC
- Remote communication and powered sensing/control/identification devices using high temperature compatible semiconductor materials19 Mar 2024US 11,937,031 B2Rtx Corporation
- Modular assembly for providing telecommunications and internet services and method of installation thereof27 Feb 2024US 11,917,345 B2Xiber, LLC
- Systems and methods to remove input voltage dependency in a power converter23 Jan 2024US 11,881,775 B2Microchip Technology Incorporated
- Methods and equipment for reducing power loss in radio systems24 Jul 2025US 2025/0239935 A1Outdoor Wireless Networks LLC
- Seafloor observation network-based subsurface buoy device with real-time power supplying and high-speed data transmitting24 Oct 2024US 2024/0357265 A1Institute of Acoustics, Chinese Academy of Sciences
- Point of interface18 Jul 2024US 2024/0243611 A1TJ INNOVATION Co., Ltd.
- Methods and equipment for reducing power loss in radio systems11 Apr 2024US 2024/0120834 A1CommScope Technologies LLC
- Modular assembly for providing telecommunications and internet services and method of installation thereof27 Jan 2022US 2022/0030332 A1Xiber, LLC
Most cited
By later US patents
- Multi-stage sensing/control/identification device having protected communication and remote power24US 9,986,310 B2United Technologies Corporation · 2018
- Electromagnetic communication from waveguide confinement14US 10,091,562 B2United Technologies Corporation · 2018
- Remote communication and powered sensing/control/identification devices13US 10,057,663 B2United Technologies Corporation · 2018
- Electromagnetic sensing of components in electromagnetic communication and method13US 10,469,920 B2United Technologies Corporation · 2019
- Electromagnetic communication from waveguide confinement11US 10,484,760 B2United Technologies Corporation · 2019