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Class Information
Number: 340/572.5
Name: Communications: electrical > Condition responsive indicating system > Specific condition > Article placement or removal (e.g., anti-theft) > Detectable device on protected article (e.g., "tag") > Having tuned resonant circuit
Description: Subject matter where the device or tag has a circuit which is capable of adjusting to respond to a particular frequency wave.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7623037 |
Multi-transducer/antenna surface acoustic wave device sensor and tag |
Nov. 24, 2009 |
| 7595731 |
IC package antenna |
Sep. 29, 2009 |
| 7595732 |
Power generating circuit |
Sep. 29, 2009 |
| 7580675 |
Data communication apparatus functioning as ID tag and ID-tag reader and writer |
Aug. 25, 2009 |
| 7561046 |
Radio tag reading apparatus |
Jul. 14, 2009 |
| 7555616 |
Devices and methods for memory tag error correction |
Jun. 30, 2009 |
| 7554449 |
Method and apparatus for preparing an item with an RFID tag |
Jun. 30, 2009 |
| 7538680 |
Alarm systems, wireless alarm devices, and article security methods |
May. 26, 2009 |
| 7535363 |
Miniature resonating marker assembly |
May. 19, 2009 |
| 7535362 |
Circuit arrangement and method for supplying power to a transponder |
May. 19, 2009 |
| 7528725 |
Passive dynamic antenna tuning circuit for a radio frequency identification reader |
May. 5, 2009 |
| 7518532 |
Intermodulation mitigation technique in an RFID system |
Apr. 14, 2009 |
| 7516057 |
Method for optimizing the design and implementation of RFID tags |
Apr. 7, 2009 |
| 7515046 |
Wireless response device, image forming apparatus, and equipment |
Apr. 7, 2009 |
| 7500610 |
Assembly comprising a functional device and a resonator and method of making same |
Mar. 10, 2009 |
| 7498941 |
IC tag communication system |
Mar. 3, 2009 |
| 7495625 |
Antenna for reader/writer and reader/writer having the antenna |
Feb. 24, 2009 |
| 7495566 |
Resonance security tag with and method of producing such a tag |
Feb. 24, 2009 |
| 7492164 |
Method for manufacturing a product sensor, and a product sensor |
Feb. 17, 2009 |
| 7486192 |
RFID tag with frequency adjusting portion |
Feb. 3, 2009 |
| 7482934 |
Communication device and communication method |
Jan. 27, 2009 |
| 7477151 |
RFID device with changeable characteristics |
Jan. 13, 2009 |
| 7474222 |
Disposable, single use security tag |
Jan. 6, 2009 |
| 7460015 |
RFID device with changeable characteristics |
Dec. 2, 2008 |
| 7456744 |
Systems and methods for remote sensing using inductively coupled transducers |
Nov. 25, 2008 |
| 7456747 |
Method and device for suppressing a transmitting signal in a receiver of an RFID write/read unit |
Nov. 25, 2008 |
| 7439862 |
Antenna array for an RFID reader compatible with transponders operating at different carrier frequencies |
Oct. 21, 2008 |
| 7439860 |
Auto-tuned RFID reader antenna |
Oct. 21, 2008 |
| 7439800 |
Amplitude demodulator for an electromagnetic transponder |
Oct. 21, 2008 |
| 7436286 |
Circuit arrangement and method for increasing the functional range of a transponder |
Oct. 14, 2008 |
| 7432808 |
Wireless module enabled component carrier for parts inventory and tracking |
Oct. 7, 2008 |
| 7424265 |
Rectifier circuit and radio communication device |
Sep. 9, 2008 |
| 7414533 |
System for placing radio frequency identification (RFID) antennas, tags and interrogators |
Aug. 19, 2008 |
| 7403122 |
RFID tag circuits operable at different speeds |
Jul. 22, 2008 |
| 7397377 |
Characterizing a cargo container |
Jul. 8, 2008 |
| 7388498 |
Method and system for producing and reading labels based on magnetic resonance techniques |
Jun. 17, 2008 |
| 7388500 |
Enhanced mechanism for radio frequency identification reader |
Jun. 17, 2008 |
| 7348890 |
Pest control techniques |
Mar. 25, 2008 |
| 7345584 |
Portable device and method for use thereon and method for use thereof |
Mar. 18, 2008 |
| 7345643 |
Wave antenna wireless communication device and method |
Mar. 18, 2008 |
| 7342498 |
Radio frequency identification (RFID) tag and manufacturing method thereof |
Mar. 11, 2008 |
| 7339480 |
Power processing interface for passive radio frequency identification system |
Mar. 4, 2008 |
| 7319368 |
Method and circuit arrangement for load modulation in a combination comprised of a transmitting and a receiving oscillator circuit |
Jan. 15, 2008 |
| 7317398 |
Security and identification label and the production and use thereof |
Jan. 8, 2008 |
| 7307535 |
Air coil RF transponder and method of making same |
Dec. 11, 2007 |
| 7295629 |
Data carrier having a controllable carrier-signal receiving-means configuration |
Nov. 13, 2007 |
| 7274285 |
System and method for improved object identification |
Sep. 25, 2007 |
| 7271724 |
Interfering smart shelf |
Sep. 18, 2007 |
| 7271677 |
Inductive data and power link suitable for integration |
Sep. 18, 2007 |
| 7262701 |
Antenna structures for RFID devices |
Aug. 28, 2007 |
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