RFID tags with shielding structure for incorporation into microwavable food packaging

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 11308379
APP PUB NO 20180189623A1
SERIAL NO

15856502

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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RFID tags are provided for incorporation into the packaging of a microwavable food item, with the RFID tag being configured to be safely microwaved. The RFID tag includes an antenna defining a gap and configured to operate at a first frequency. An RFID chip is electrically coupled to the antenna across the gap. A shielding structure is electrically coupled to the antenna across the gap and overlays the RFID chip. The shielding structure includes a shield conductor and a shield dielectric at least partially positioned between the shield conductor and the RFID chip. The shielding structure is configured to limit the voltage across the gap when the antenna is exposed to a second frequency that is greater than first frequency. In additional embodiments, RFID tags are provided for incorporation into the packaging of a microwavable food item, with the RFID tag being configured to be safely microwaved. The RFID tag includes an RFID chip and an antenna electrically coupled to the RFID chip. The antenna may have a sheet resistance in the range of approximately 100 ohms to approximately 230 ohms, optionally with an optical density in the range of approximately 0.18 to approximately 0.29. Alternatively, or additionally, the antenna may be configured to fracture into multiple pieces upon being subjected to heating in a microwave oven. Alternatively, or additionally, the RFID tag may be incorporated in an RFID label that is secured to the package by a joinder material with a greater resistance than that of the antenna, such as a sheet resistance in the range of approximately 100 ohms to approximately 230 ohms.

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Patent Owner(s)

  • AVERY DENNISON RETAIL INFORMATION SERVICES, LLC

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cumby, Brad Liberty Township, US 8 34
Duan, Hu Solon, US 2 14
Feltz, John Fairborn, US 2 14
Forster, Ian J Chelmsford, GB 371 7699
Higgins, Cameron Franklin, US 2 14
Howard, Norman Ilford, GB 13 152
Orlowski, James Painesville, US 2 14
Strohmeier, Brian Pittsburgh, US 2 14

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