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:
Sep. 20, 2011
Filed:
Mar. 23, 2007
Applicants:
Koji Sugiyama, Kyoto, JP;
Toshikatsu Sakai, Kyoto, JP;
Inventors:
Koji Sugiyama, Kyoto, JP;
Toshikatsu Sakai, Kyoto, JP;
Assignee:
Arkray, Inc., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 33/72 (2006.01); G01N 21/63 (2006.01); G01N 21/01 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a method and an apparatus that measure the concentration of glycated hemoglobin by an optical technique. A wavelength in which the molecular extinction coefficient of oxyhemoglobin agrees or substantially agrees with the molecular extinction coefficient of deoxyhemoglobin is adopted as a measurement wavelength. Preferably, the measurement wavelength is set at from 417 to 421 nm. In the present invention, the concentration of glycated hemoglobin is measured by making use of column chromatography and of using a sample prepared from red blood cells in blood.