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:
Dec. 30, 2025
Filed:
Mar. 15, 2021
Hitachi High-tech Corporation, Tokyo, JP;
Hajime Kato, Tokyo, JP;
Yoichiro Suzuki, Tokyo, JP;
Gorou Yoshida, Tokyo, JP;
Tetsuji Kawahara, Tokyo, JP;
Syotaro Sagawa, Tokyo, JP;
Hitachi High-Tech Corporation, Tokyo, JP;
Abstract
The present invention provides an automatic chemical analysis apparatus and an electrical impedance spectrometry device which make it possible to detect the state of a stirring mechanism prior to performing a stirring operation. The automatic chemical analysis apparatus dispenses a reagent and a sample to be analyzed into a reactor vessel, and performs stirring by applying sonic waves to the reactor vessel. The automatic chemical analysis apparatus comprises: a piezoelectric elementthat generates sonic waves; a plurality of split electrodesthat are provided to the surface of the piezoelectric element; a power amplifierthat causes the piezoelectric elementto generate sonic waves by applying a voltage to each of the split electrodes; and a host computer and impedance measuring circuit that measure the electrical impedance spectrum of each split electrodeby applying a voltage to each of the split electrodes