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:
Apr. 06, 2021
Filed:
Mar. 26, 2020
Applicant:
Far Eastern New Century Corporation, Taipei, TW;
Inventors:
Po-Chen Lai, Taoyuan, TW;
Jyun-Sian Lee, Taoyuan, TW;
Sih-Hao Chiang, Taoyuan, TW;
Chin-Shui Liang, Taoyuan, TW;
Hsiang-Chin Tsai, Taoyuan, TW;
Assignee:
FAR EASTERN NEW CENTURY CORPORATION, Taipei, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 51/43 (2006.01); C07C 51/02 (2006.01); C07C 63/26 (2006.01);
U.S. Cl.
CPC ...
C07C 51/43 (2013.01); C07C 51/02 (2013.01); C07C 63/26 (2013.01);
Abstract
Method for manufacturing terephthalic acid includes following steps: providing a titrant receptor solution, the titrant receptor solution being water; adding disodium terephthalate aqueous solution and an acid titrant into the titrant receptor solution to form terephthalic acid crystals and an end-point solution, and separating the terephthalic acid crystals from the end-point solution.