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:
Oct. 21, 2025
Filed:
Apr. 26, 2024
Applicant:
Casale SA, Lugano, CH;
Inventors:
Assignee:
Casale SA, Lugano, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 273/16 (2006.01); B01D 3/06 (2006.01); B01D 5/00 (2006.01); B01D 61/02 (2006.01); C07C 273/04 (2006.01);
U.S. Cl.
CPC ...
C07C 273/16 (2013.01); B01D 3/06 (2013.01); B01D 5/0072 (2013.01); B01D 5/0084 (2013.01); B01D 61/026 (2022.08); C07C 273/04 (2013.01); B01D 2311/06 (2013.01); B01D 2311/08 (2013.01); B01D 2313/50 (2013.01); B01D 2317/027 (2013.01);
Abstract
A process for purifying a urea-containing aqueous stream, such as the aqueous stream from the recovery section of a urea plant, comprising a step of removing biuret from the urea-containing stream by reverse osmosis in one or more reverse osmosis stages.