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:
Apr. 07, 2009
Filed:
Feb. 06, 2006
Applicants:
Hiroyuki Funo, Ashigarakami-gun, JP;
Masao Watanabe, Ashigarakami-gun, JP;
Kiyoshi Iida, Ashigarakami-gun, JP;
Ryota Mizutani, Ashigarakami-gun, JP;
Inventors:
Hiroyuki Funo, Ashigarakami-gun, JP;
Masao Watanabe, Ashigarakami-gun, JP;
Kiyoshi Iida, Ashigarakami-gun, JP;
Ryota Mizutani, Ashigarakami-gun, JP;
Assignee:
Fuji Xerox Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G08B 13/14 (2006.01); H04Q 5/22 (2006.01);
U.S. Cl.
CPC ...
Abstract
A wireless response device comprises an antenna that receives a question signal, an identification signal generating unit that generates a response signal for a question signal received by the antenna, and that operates passively, and an impedance conversion unit provided between the antenna and the identification signal generating unit, whose impedance changes in response to the state of the environment.