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. 16, 2007
Eiji Takahashi, Kobe, JP;
Ryo Katayama, Kobe, JP;
Masato Kannaka, Kobe, JP;
Hiroyuki Takamatsu, Kobe, JP;
Eiji Takahashi, Kobe, JP;
Ryo Katayama, Kobe, JP;
Masato Kannaka, Kobe, JP;
Hiroyuki Takamatsu, Kobe, JP;
Kobe Steel, Ltd., Hyogo, JP;
Abstract
The concentration of impurities contained in ultrapure water or press water can be efficiently analyzed with high precision. A portion of a liquid to be measured is introduced into an absorption spectrometric portion from a predetermined line. The liquid is irradiated with exciting light from an exciting light irradiation system, and a measurement object region in which a photothermal effect of the impurities in the liquid is produced by the irradiation is irradiated with measuring light from a measuring light irradiation system. A change in phase of the measuring light is detected by a predetermined optical system and a photodetector, and the impurity concentration in the liquid is determined on the basis of the change in phase.