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. 19, 2022
Filed:
Dec. 11, 2018
Merck Patent Gmbh, Darmstadt, DE;
Laurent Moreau, Versailles, FR;
Ichiro Kano, Montigny le Bretonneux, FR;
Didier Meyer, Paris, FR;
Pascal Roitel, Strasbourg, FR;
Abstract
The invention provides a water purification and dispensing system, preferably for producing ultrapure water and offering the purified water at dispensing sites. The system () comprises a first purification stage () for purifying water to a first water purity grade, a water recirculation loop () including a second purification stage () for purifying water to a second water purity grade higher than the first purity grade and a dispensing portion () for the purified water, and a reservoir () arranged to store the water purified at the first purification stage () through a first connecting flowpath () and to deliver the stored water to the water recirculation loop () through a second connecting flowpath (). A 3-way valve () is provided in the flowpath between the first purification stage () and the reservoir () to selectively block the flow of purified water to the reservoir () and to drain the purified water from the first purification stage (). A third connecting flowpath () is branched from said dispensing portion () and is connected to the first connecting flowpath () upstream of an UV radiation treatment device ().