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:
Jan. 17, 1989
Filed:
Jan. 05, 1988
Applicant:
Inventors:
Kikuo Otomo, Tokyo, JP;
Masashi Yamagushi, Tokyo, JP;
Masami Ito, Tokyo, JP;
Hiroki Tokunaga, Tokyo, JP;
Assignee:
Hodogaya Chemical Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
570211 ; 570190 ;
Abstract
A method for separating a trihalogenobenzene isomer from a mixture of at least two trihalogenobenzene isomers selected from the group consisting of 1,2,3-, 1,2,4- and 1,3,5-substituted isomers among trihalogenobenzenes represented by the formula: ##STR1## wherein X is Cl or Br, by means of a zeolite adsorber, characterized in that a ZSM-zeolite is used as the adsorber.