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Product management system

  • US 8,237,569 B2
  • Filed: 04/06/2005
  • Issued: 08/07/2012
  • Est. Priority Date: 04/09/2004
  • Status: Expired due to Fees
First Claim
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1. A product management system comprising:

  • a first resonance circuit;

    a second resonance circuit; and

    a reader/writer for at least one of reading information stored in a semiconductor device and writing information in the semiconductor device,wherein the first resonance circuit comprises a first antenna coil and a first capacitor,wherein the second resonance circuit comprises a second antenna coil and a second capacitor,wherein a first packing material for packing a product is provided with the first resonance circuit,wherein a second packing material for packing the first packing material is provided with the second resonance circuit,wherein the product is provided with the semiconductor device,wherein the second resonance circuit can communicate with the reader/writer and the first resonance circuit, andwherein the first resonance circuit can communicate with the second resonance circuit and the semiconductor device.

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