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:
Oct. 09, 2012
Filed:
Apr. 26, 2005
Applicants:
Takashi Ikeda, Yokohama, JP;
Norihiko Utsunomiya, Machida, JP;
Junta Yamamichi, Yokohama, JP;
Inventors:
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 33/533 (2006.01); H01G 4/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
A detection device and a detecting method using the detection device are provided in which a magnetic particle is used as a marker particle, and the ratio of a region with reversed magnetization to the whole area of a free layer of a magnetoresistive effect film is increased by a stray magnetic field generated through a biochemical reaction from the magnetic particle remaining on a surface of the magnetoresistive effect film, so that a large detection signal is obtained and obtained detection data can be stored with stability.