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:
Aug. 22, 2000
Filed:
Oct. 09, 1998
Applicant:
Inventors:
Masaaki Nabika, Ichihara, JP;
Kotohiro Nomura, Ikoma, JP;
Assignee:
Sumitomo Chemical Company, Limited, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F / ; C07F / ;
U.S. Cl.
CPC ...
556 11 ; 556-1 ; 556-7 ; 556 21 ; 556 53 ; 502103 ; 502117 ; 526160 ; 526943 ;
Abstract
A method for purifying a transition metal compound, which comprises conducting crystallization of a transition metal compound from a solution containing the transition metal compound while stirring. According to the present invention, it is possible to purify and produce efficiently a transition metal compound at high purity under industrially and economically advantageous conditions.