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. 31, 1995
Filed:
Feb. 23, 1995
Applicant:
Inventors:
Yoshiaki Kobuke, Hamamatsu, JP;
Akio Togashi, Tsuchiura, JP;
Masaki Ozawa, Ibaraki, JP;
Masayuki Watanabe, Ibaraki, JP;
Assignee:
Doryokuro Kakunenryo Kaihatsu Jigyodan, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F / ; C07F / ; C07F / ;
U.S. Cl.
CPC ...
556117 ; 556130 ; 556146 ; 423155 ; 25218212 ; 534 15 ;
Abstract
An extractant for selectively extracting strontium from an aqueous solution containing the same, which comprises a 1,2-benzenebis(1,4-dioxanonyl-6,8-dionato)metal complex of the following structural formula: ##STR1## wherein M represents a metal ion of Cu (II), Zn (II) or Ni (II).