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:
Jan. 19, 2021
Filed:
Mar. 06, 2018
Applicant:
Toyo Engineering Corporation, Tokyo, JP;
Inventors:
Assignee:
TOYO ENGINEERING CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 273/16 (2006.01); B01J 2/00 (2006.01); C07C 275/00 (2006.01);
U.S. Cl.
CPC ...
C07C 273/16 (2013.01); B01J 2/00 (2013.01); C07C 275/00 (2013.01);
Abstract
Precipitation of an ammonium salt is prevented while suppressing an increase in water content of the aqueous urea solution which is to be supplied to a urea granulation step, when recovering and using urea and NHin a gas which contains urea dust and NHand which arises from a urea granulation step.