The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jul. 31, 2007

Filed:

Mar. 09, 2005
Applicants:

Nobuo Murofushi, Shizuoka-ken, JP;

Kouichi Sano, Shizuoka-ken, JP;

Yasuo Matsumoto, Shizuoka-ken, JP;

Yasuhito Kiji, Shizuoka-ken, JP;

Inventors:

Nobuo Murofushi, Shizuoka-ken, JP;

Kouichi Sano, Shizuoka-ken, JP;

Yasuo Matsumoto, Shizuoka-ken, JP;

Yasuhito Kiji, Shizuoka-ken, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08B 13/14 (2006.01);
U.S. Cl.
CPC ...
Abstract

A tag unit comprises two RFID tags arranged nearly parallel with each other, each RFID tag including an antenna, tag transmission/reception section, and storage section. The tag unit stores different serial numbers in the respective storage sections. A tag unit reading/writing apparatus writes the different serial numbers and common data in the storage sections of the respective RFID tags, and retains the same serial numbers of the respective RFID tags in its storage section 18. The tag unit reading/writing apparatus judges validity of reading and reusability of the tag unit, when it successfully reads both of the serial numbers and the data stored in the storage sections of the respective RFID tags.


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