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. 01, 2026
Filed:
Nov. 25, 2021
Yokogawa Electric Corporation, Tokyo, JP;
Yokogawa Electric Corporation, Tokyo, JP;
Abstract
A concentration apparatus including a negatively charged membrane, a sample water supply, a first solenoid valve on a flow path from the sample water supply to the negatively charged membrane, an acidic solution storage tank storing an acidic solution, a second solenoid valve on a flow path from the acidic solution storage tank to the negatively charged membrane, an alkaline solution storage tank storing an alkaline solution, a third solenoid valve on a flow path from the alkaline solution storage tank to the negatively charged membrane, an outlet to discharge fluid, a fourth solenoid valve and a first suction pump each on a flow path from the negatively charged membrane to the outlet, a collection container in which fluid is collected, a fifth solenoid valve on a flow path from the negatively charged membrane to the collection container, and a controller that controls opening and closing of the solenoid valves.