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. 10, 1989
Filed:
Jan. 29, 1988
Applicant:
Inventors:
Toshitaka Kaneshiki, Koriyama, JP;
Osamu Narukawa, Koriyama, JP;
Tadayoshi Haneda, Koriyama, JP;
Toshiyuki Endo, Koriyama, JP;
Assignee:
Hodogaya Chemical Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
570211 ; 570190 ;
Abstract
A selective isolation of m-dichlorobenzene is carried out at a high efficiency by bringing an isomeric mixture containing m- and o- and/or p-dichlorobenzenes into contact with an absorbing material comprising a TPZ-3 type zeolite consisting of at least one aluminosilicate compound of the formula (I):