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. 28, 1980
Filed:
Jun. 08, 1979
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;
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
562486 ;
Abstract
Terephthalic acid produced by oxidizing paraxylene can be obtained in the form of dried powder from the slurry containing terephthalic acid and acetic acid and/or water by using combination of a tubular type heater having at least one heating tube and a separation chamber in which the heating tube(s) open(s) at one end(s) thereof. Critical slurry concentrations for smooth operation are given.