Avery Dennison Retail Information Services, LLC

Avery Dennison Corporation

Mineral Lassen LLC

Other

Marconi Communications Gmbh

Marconi Intellectual Property (us) Inc.

Marconi Data Systems Limited

General Electric Company

Marconi Caswell Limited

Gec-marconi Limited

Avery Denninson Corporation

A.b. Dick Holdings Limited

Avry Dennison Corporation

Gec-marconi Communications. Ltd

Ian J Forster

Patrick F King

Norman A Howard

Peter Robert George Horrell

Adrian N Farr

Michael G Ginn

Peter Cockerell

Benjamin John Kingston

David Puleston

Christian K Oelsner

Robert Revels

Scott Wayne Ferguson

Yukihiko Sasaki

David Nicholas Edwards

Andrew W Holman

James P Coleman

Steven N Terranova

Thomas Craig Weakley

Brad L Cumby

Peikang Liu

Michael A Lake

Edward J McGinniss

Pradeep S Iyer

Mark Anthony Licon

Jason D Munn

David Charles Welch

Michael J Pfeiffer

Radislav Alexandrovich Potyrailo

Haochuan Wang

Christine U Dang

Steven C Kennedy

John Feltz

Panagiotis Petridis

Samuel A Linder

Brian Strohmeier

Cameron Higgins

Barry J Roberts

Linda Jacober

James Orlowski

Francisco Duarte Barbosa Teixeira E Melo

Bernd Selgrath

Hu Duan

Sriram Venkatasanthanam

Steven R Chapman

Jaime Christopher Grunlan

Paul A Chamandy

Rudolph J Klein

Craig William Potter

Victor P Holbert

Sjoerd Johannes Van Driesten

Moris Amon

Mark Bartlett

T Craig Weakley

David J Puleston

Mark McGlade

Normal Howard

Elizabeth Sowle

Edward McGINNISS

Antenna

A flexible RFID wire tag includes an RFID chip and an associated antenna formed of a deformable filament. The antenna may be helically shaped and deformable from an initial helical configuration to an expanded helical configuration having a greater diameter. An object or a portion of an object is positioned within an open interior of the helical antenna and then the antenna is returned from the expanded configuration to the initial configuration to cause the antenna to contact and grip the object. In another aspect, first and second ends of the antenna are secured to an object, with the filament being configured to deform and/or vibrate upon being subjected to a stimulus so as to modify at least one operational parameter of the antenna. Such a deformable filament may be helical or may be differently configured, such as to be incorporated into a cardboard ticket.

Flexible RFID tag having a helical antenna and an object gripped within the helical antenna

A method for manufacturing an antenna for an RFID device includes providing a conductive material on a substrate and performing a first cutting process on the conductive material to define an initial antenna. Additional cutting processes are performed on the initial antenna to define a final antenna, with the first and any subsequent cutting processes being different. The subsequent cutting processes are capable of more finely defining regions of the antenna, such as in some embodiments when the first cutting process is a die cutting process and a second cutting process is a laser cutting process. While the subsequent cutting processes are capable of more finely defining regions of the antenna than the first cutting process. By combining multiple cutting processes, a final antenna equivalent to one made using only one or more of the subsequent cutting processes may be created at a lower cost.

RFID antenna formed by multiple cutting processes

In one embodiment, an RFID device is disclosed that contains a first conductive structure and a second conductive structure formed from multiple conductive materials configured to move between a first operating condition and a second operating condition when exposed to an event or other stimuli. The second conductive structure is initially operatively coupled to the first conductive structure in the first operating condition. However, after exposure to the event, the first conductive structure is altered to change the behavior of the RFID device. The RFID device is attachable to a substrate, such as a garment or a fabric, and the event may be a single or multiple occurrence event, such as washing, stretching, heating, or exposure of the RFID device to electrical signals.

RFID tag antennas with multiple conductors

A conductive structure for use with a RFID device having a metallic mass that is below a standard detection threshold of a metal detector and a method of manufacturing the same is disclosed herein. The conductive structure preferably comprises a pair of dipole arms extending from a tuning loop, wherein each of the pair of dipole arms terminates in a load end. The conductive structure may be manufactured from a printed metallic ink, or by cutting, lasering, or etching a metal foil. The conductive structure is modified to reduce overall thickness and metallic mass of the device as much as possible, while still maintaining an acceptable level of performance. Portions of the load ends may also be hollowed out to further reduce the conductive structure's metallic mass.

Metal detector resistant RFID tags

In some embodiments, an RFID device includes an RFID assembly that includes an RFID antenna and an RFID chip electrically coupled to the RFID antenna, the RFID assembly having a first side and a second side. The RFID device may further include a first layer including a visual element and having a first side and a second side, the first side of the first layer contacting a first side of the RFID assembly. The RFID device may further include a second layer having a first side and a second side, the first side of the second layer contacting at least one of the first visual element and the RFID assembly.

RFID devices including embossed or other elements

A recyclable RFID device having one or more recoverable components configured to remain substantially intact during a waste recycling process. The one or more recoverable components comprises a RFID coupling strap and a substrate encapsulating the RFID coupling strap. A filtering system for recovering the recyclable RFID device from a waste stream is also disclosed, and comprises a waste collection container, a RFID device detection unit, and a RFID device diversion area. Additionally, a filtering system for recovering the recyclable RFID device during a waste recycling process is disclosed. The filtering system enables separating the recyclable RFID device from a packaging and detecting the separated components of the recyclable RFID device including the one or more recoverable components. The separated components including the RFID chip is then diverted from the waste stream for reuse.

Filtering systems for recycling RFID tags and methods of using thereof

A method of optimizing a RFID reader system to increase the percentage of RFID tags successfully inventoried in a container comprising a relatively large number of RFID tagged items in close proximity to one another. To achieve the greater percentage of successfully inventoried RFID tagged items, a transmitting system capable of reading an RFID tag and a receiving system capable of determining how much of the transmitted power propagates through the volume of RFID tagged items is positioned on either side of the container. A host system in communication with both the transmitting and receiving systems then utilizes one or more parameters of the transmitting system to maximize propagation of the RFID signal through the container and, therefore, increase the percentage of RFID tags successfully inventoried with the ultimate goal being 100%.

Method of optimizing read technology for high density items

RFID-based electronic surveillance article systems are provided with first and second receiving antennas. An RF signal is transmitted to an RFID device, which transmits a return signal that is received by the receiving antennas. A position of the RFID device may be determined based on a difference between the strength of the return signal when received by the first antenna and the strength of the return signal when received by the second antenna. If RF signals are transmitted by the receiving antennas, the position of the RFID device may be determined by changing the strengths of the RF signals transmitted by each antenna and comparing the strength of the RF signal transmitted by the first antenna when the RFID device is at a threshold for receiving the signal to the strength of the RF signal transmitted by the second antenna when the RFID device is at the threshold.

Range discrimination in an RFID electronic article surveillance system

RFID devices are provided for improving the performance of electronic surveillance article systems. The RFID devices may be modified in any of a number of ways to decrease their peak sensitivity and increase their bandwidth, thereby stabilizing their read range. The performance of an RFID device will depend on the nature of the article to which it is associated, such that the nature of the article to which the RFID device is to be associated may be factored into the design of the RFID device to equalize the performance at an operating frequency of RFID devices associated with different articles. By reducing the peak sensitivity and increasing the bandwidth of RFID devices in an electronic article surveillance system, the size of a transition zone between two read zones of the system may be reduced.

Control of RFID devices for increased reliability and effectiveness in an RFID electronic article surveillance system

RFID devices for use in electronic surveillance article ('EAS') systems may be differently configured, resulting in different performance at the operating frequency or range of frequencies of an EAS system. The performance of differently configured RFID devices may be converged or rendered substantially similar by testing the performance of such RFID devices in a range of frequencies. At least one of the RFID devices is reconfigured to converge the performance of the RFID devices in the range of frequencies if the performance of the RFID devices is not sufficiently similar. This may include changing the configuration of an antenna, an RFID chip, and/or a non-functional component of an RFID device and/or the location in which an RFID device is associated to an article. Differently configured RFID devices may all be manufactured from the same initial configuration, with different RFID devices being differently processed before incorporation in an EAS system.

Convergence of performance of RFID devices in an electronic article surveillance system

A temperature-sensing RFID device includes an RFID chip and an antenna electrically coupled thereto. The RFID chip includes a temperature sensor, while the antenna is adapted to receive energy from an RF field and produce a signal. A shielding structure and/or a thermally conductive or absorbent structure may be associated with the RFID chip. The shielding structure is oriented so as to be positioned between at least a portion of the RFID chip and an outside environment and configured to shield the temperature sensor from at least one environmental factor capable of affecting a temperature sensed by the temperature sensor of an article to which the RFID device is secured. The thermally conductive or absorbent structure is oriented so as to be positioned between at least a portion of the RFID chip and the article and configured to enhance thermal coupling between the temperature sensor and the article.

Shielding and/or enhancement of temperature-sensing RFID devices

Growing community of inventors

Chelmsford, United Kingdom

Ian J Forster