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:
Nov. 16, 2004
Filed:
Jan. 25, 2001
Applicant:
Inventors:
Hiroaki Mori, Tokyo, JP;
Youko Sugio, Tokyo, JP;
Assignee:
JFE Chemical Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 3/04 ; B01D 3/36 ; C01G 2/112 ; C01G 2/920 ; C01G 7/08 ;
U.S. Cl.
CPC ...
B01D 3/04 ; B01D 3/36 ; C01G 2/112 ; C01G 2/920 ; C01G 7/08 ;
Abstract
Indene is produced from an indene-containing coal tar distillate by adding a glycol to the indene-containing coal tar distillate and then conducting azeotropic distillation to obtain an indene fraction while eliminating benzonitrile from the indene-containing coal tar distillate.