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:
Jul. 21, 1998
Filed:
Feb. 04, 1997
Naomi Tawarayama, Yokohama, JP;
Tadafumi Kuroishi, Naka-gun, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
An analytical system for a trace element, which includes a pressure pump for continuously feeding a carrier solution, a first sample introduction unit for introducing a sample and a reagent using sample loops and switching valves, a first flow passage including a pre-treatment unit for pre-treating the sample by heating, and a second flow passage separated from in pressure from the first flow passage, wherein the sample pre-treated in the first flow passage is sampled into the second flow passage through a second sample introduction unit, and the sample thus sampled in the second flow passage is allowed to coloredly react with a coloring agent and measured in absorbance.