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.
Patent No.:
Date of Patent:
Aug. 23, 2011
Filed:
Dec. 16, 2005
Applicants:
Isao Sakama, Hiratsuka, JP;
Keizo Watanabe, Kawasaki, JP;
Minoru Ashizawa, Tokyo, JP;
Inventors:
Assignee:
Hitachi, Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G08B 13/14 (2006.01); H01L 35/00 (2006.01); H01L 23/28 (2006.01);
U.S. Cl.
CPC ...
Abstract
A wireless IC tag includes an IC chip with a response circuit for receiving a signal sent from an interrogator and transmitting a response signal in response to the received signal, a rectangular antenna connected to the response circuit, a first protective material hard in nature for covering the IC chip, and a second protective material, softer than the first protective material, for covering at least a part of the antenna, and the antenna is formed in a laminated structure of a plurality of flat members different in toughness so as not to fracture even when the antenna is bent by external forces.