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:
Jan. 16, 2007
Filed:
Dec. 24, 2003
Applicants:
Futoshi Deguchi, Fukuoka, JP;
Hiroshi Yoshinaga, Kasuya-gun, JP;
Akihiko Hirata, Fukuoka, JP;
Masahiko Tanaka, Maebaru, JP;
Inventors:
Futoshi Deguchi, Fukuoka, JP;
Hiroshi Yoshinaga, Kasuya-gun, JP;
Akihiko Hirata, Fukuoka, JP;
Masahiko Tanaka, Maebaru, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05B 19/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A non-contact IC card reading/writing apparatus having a superior reception characteristic includes a loop antenna, a resonant circuit unit, a wireless transmitting unit, and a wireless receiving unit. The resonant circuit unit, the wireless transmitting unit, and the wireless receiving unit are coupled to each other via any one of a directional coupler, a circulator, and an isolator.