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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.:

US 12521689 B1

PDFFull Text
Date of Patent:
Jan. 13, 2026

Filed:

Dec. 16, 2022

Continuous synthesis system of urea

Applicants:

Shenzhen Zhonghe Headway Bio-sci & Tech Co., Ltd., Shenzhen, CN;

Harbin Institute of Technology, Shenzhen, Shenzhen, CN;

Inventors:

Jing Qing, Shenzhen, CN;

Hengzhi You, Shenzhen, CN;

Kai Chen, Shenzhen, CN;

Quansheng Han, Shenzhen, CN;

Guowei Li, Shenzhen, CN;

Jingyuan Liao, Shenzhen, CN;

Xuelei Jia, Shenzhen, CN;

Desheng Dai, Shenzhen, CN;

Assignees:

Shenzhen Zhonghe Headway Bio-Sci & Tech Co., Ltd., Shenzhen, CN;

Harbin Institute of Technology, Shenzhen, Shenzhen, CN;

Attorney:
Primary Examiner:

Prem C Singh

Int. Cl.
CPC ...
C07C 273/04 (2006.01); B01J 4/00 (2006.01); B01J 19/00 (2006.01); B01J 19/18 (2006.01); B01J 19/28 (2006.01);
U.S. Cl.
CPC ...
B01J 19/1812 (2013.01); B01J 4/008 (2013.01); B01J 19/0013 (2013.01); B01J 19/0066 (2013.01); B01J 19/285 (2013.01); B01J 2204/002 (2013.01); B01J 2204/007 (2013.01); B01J 2219/00033 (2013.01); B01J 2219/00063 (2013.01); B01J 2219/00162 (2013.01); B01J 2219/00164 (2013.01);
Abstract

A continuous synthesis system of urea, including: a reactor, a mixing buffer tank for accommodating a first raw material, a feeding pump for pumping the first raw material to the reactor, a pressure regulating valve connected to the reactor to transfer a second raw material and regulate a pressure of the second raw material, a first heat exchanger connected to the reactor to regulate a temperature inside the reactor to a first preset temperature, and a back pressure valve connected to an end of the reactor away from the feeding pump to maintain a pressure of the continuous synthesis system at a preset pressure. The second raw material is gaseous. The second raw material is fed to the reactor through the pressure regulating valve to react with the first raw material in the reactor to generate a target product.

Find Patent Forward Citations

Qing, Jing. (2026). Continuous synthesis system of urea (U.S. Patent No. 12521689). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12521689

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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