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. 16, 2001
Filed:
Feb. 23, 2000
Applicant:
Inventors:
Yuichi Kitagawa, Kawasaki, JP;
Koji Otaka, Tokushima, JP;
Tomoya Kubo, Tokushima, JP;
Eiji Takeichi, Tokushima, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F 1/700 ; C07F 7/00 ;
U.S. Cl.
CPC ...
C07F 1/700 ; C07F 7/00 ;
Abstract
A di-substituted metallocene compound having good quality can be synthesized completely at a low cost in a high yield in a easy manner by reacting a metallocene dihalide with a Grignard reagent which is a compound represented by formula (I): RMgX (wherein R represents an aryl, benzyl or diaryl phosphinomethylene group which may have a substituent and X represents a halogen element) under specified conditions.