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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 4219669 B1

PDFFull Text
Date of Patent:
Aug. 26, 1980

Filed:

Jun. 08, 1979

Method of treating mother liquor of reaction in terephthalic acid

Applicant:
Inventors:

Fujio Tsuchiya, Yokohama, JP;

Kenzo Yamamoto, Yokohama, JP;

Katsunobu Yamaguchi, Yokohama, JP;

Akio Okagami, Yokohama, JP;

Assignees:

JGC Corporation, Tokyo, JP;

Orient Kagaku Kogyo K.K., Osaka, JP;

Attorney:

Armstrong, Nikaido, Marmelstein & Kubovcik

Primary Examiner:

Alan Siegel

Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
562486 ;
Abstract

Reaction mother liquor of terephthalic acid production is treated to separate volatile component mainly composed of acetic acid and solid components composed of used catalyst or heavy metal salt(s), residual terephthalic acid and reaction by-products by using combination of a tubular type heater having at least one heating tube of a relatively small diameter and a separation chamber in which the heating tube(s) open(s) at one end thereof.

Find Patent Forward Citations

Tsuchiya, Fujio. (1980). Method of treating mother liquor of reaction in terephthalic acid (U.S. Patent No. 4219669). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4219669

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

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