H01Q 1/2225
Used in active tags, i.e. provided with its own power source or
Official title: {used in active tags, i.e. provided with its own power source or in passive tags, i.e. deriving power from RF signal}
H01Q1/2225 (Used in active tags, i.e. provided with its own power source or) appears on 1,737 US grants and 1,973 published applications in this corpus.
Search patents in H01Q- Granted patents
- 1,737
- Published applications
- 1,973
- Assignees
- 769
- Inventors
- 2,813
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 5 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 8 | 0 |
| 1999 | 14 | 0 |
| 2000 | 20 | 0 |
| 2001 | 30 | 7 |
| 2002 | 37 | 22 |
| 2003 | 29 | 27 |
| 2004 | 21 | 25 |
| 2005 | 24 | 44 |
| 2006 | 29 | 73 |
| 2007 | 29 | 91 |
| 2008 | 47 | 99 |
| 2009 | 48 | 120 |
| 2010 | 72 | 98 |
| 2011 | 70 | 106 |
| 2012 | 72 | 89 |
| 2013 | 112 | 107 |
| 2014 | 93 | 115 |
| 2015 | 111 | 103 |
| 2016 | 90 | 71 |
| 2017 | 105 | 104 |
| 2018 | 79 | 105 |
| 2019 | 107 | 111 |
| 2020 | 96 | 101 |
| 2021 | 84 | 82 |
| 2022 | 75 | 81 |
| 2023 | 75 | 67 |
| 2024 | 66 | 50 |
| 2025 | 54 | 46 |
| 2026 | 23 | 29 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Emergency transmitter device25 Aug 2026US 12,715,607 B2Goodrich Corporation
- Dual-band radio frequency identification tag antenna for metallic objects25 Aug 2026US 12,718,052 B2Nanyang Technological University
- System for tracking tagged surgical articles with a transport container tracking assembly18 Aug 2026US 12,708,485 B2Howmedica Osteonics Corp.
- Monopole antenna design for improved RF antenna efficiency18 Aug 2026US 12,712,278 B2Texas Instruments Incorporated
- Systems and methods for presence estimation for missing products11 Aug 2026US 12,705,573 B2Nexite Ltd.
- Metal card including insert coil and method of manufacturing same17 Sep 2026US 2026/0282209 A1Kona M Co., Ltd.
- Passive micro-rfid tag antenna with ionic encasement that extends read-distance-to-size ratio3 Sep 2026US 2026/0260087 A1Somark Group Ltd
- Rfid tag27 Aug 2026US 2026/0252839 A1Daio Paper Corporation
- High gain metamaterial loaded slot antenna6 Aug 2026US 2026/0229784 A1Avery Dennison Retail Information Services LLC
- Antenna device6 Aug 2026US 2026/0229786 A1Panasonic Intellectual Property Management Co., Ltd.
Most cited
By later US patents
- Energy harvesting circuits and associated methods636US 6,856,291 B2University of Pittsburgh—Of the Commonwealth System of Higher Education · 2005
- Single chip transponder device415US 4,857,893 ABI Incorporated · 1989
- Enclosed transceiver404US 5,448,110 AMicron Communications, Inc. · 1995
- Applications for radio frequency identification systems381US 6,232,870 B13M Innovative Properties Company · 2001
- Radio frequency data communications device371US 6,130,602 AMicron Technology, Inc. · 2000