G06K 19/0709
The source being an interrogation field
Official title: {the source being an interrogation field}
G06K19/0709 (The source being an interrogation field) appears on 256 US grants and 276 published applications in this corpus.
Search patents in G06K- Granted patents
- 256
- Published applications
- 276
- Assignees
- 143
- Inventors
- 479
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2005 | 0 | 1 |
| 2006 | 0 | 2 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 3 | 2 |
| 2012 | 1 | 5 |
| 2013 | 2 | 6 |
| 2014 | 3 | 8 |
| 2015 | 12 | 11 |
| 2016 | 11 | 13 |
| 2017 | 11 | 11 |
| 2018 | 12 | 19 |
| 2019 | 21 | 29 |
| 2020 | 33 | 29 |
| 2021 | 31 | 33 |
| 2022 | 28 | 32 |
| 2023 | 25 | 28 |
| 2024 | 29 | 24 |
| 2025 | 22 | 11 |
| 2026 | 12 | 10 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Fast frequency switching for RFID applications8 Sep 2026US 12,730,989 B1Impinj, Inc.
- Wireless communication method, terminal device and communication device18 Aug 2026US 12,713,403 B2Guangdong Oppo Mobile Telecommunications Corp., Ltd.
- Methods and apparatus for the arbitration of RF power between an ultra high frequency (UHF) radio-frequency identification (RFID) system and an external assembly11 Aug 2026US 12,705,451 B2Powercast Corporation
- Systems and methods for presence estimation for missing products11 Aug 2026US 12,705,573 B2Nexite Ltd.
- Communication control method for communication device, item management equipment, and item management system21 Jul 2026US 12,688,391 B2Kabushiki Kaisha Sato
- Interactive systems and methods with tracking devices8 Oct 2026US 2026/0310914 A1Universal City Studios LLC
- Methods and apparatuses relating to activation signals for tag devices24 Sep 2026US 2026/0289206 A1Nokia Technologies Oy
- Device and Method for Multiple Identity Tags Coupled to a Single Antenna or Single Antenna Array16 Jul 2026US 2026/0203544 A1T-Mobile Innovations LLC
- Systems and methods for performing transactions16 Jul 2026US 2026/0203740 A1Block, Inc.
- Led or oled capacitance antenna for inductive cards9 Jul 2026US 2026/0195557 A1Thales Dis France SAS
Most cited
By later US patents
- Protocol management method for a passive RF identification device which can harvest power from different power sources53US 9,411,992 B1EM Microelectronic-Marin SA · 2016
- Self tuning RFID tags31US 8,952,792 B1Impinj, Inc. · 2015
- RFID tag with MOS bipolar hybrid rectifier26US 8,326,256 B1Impinj, Inc. · 2012
- Impedance-change mitigation in RFID tags25US 9,886,658 B1Impinj, Inc. · 2018
- RFID tag with double-switch rectifier21US 8,044,801 B1Impinj, Inc. · 2011