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:
Jun. 05, 2001
Filed:
Jul. 06, 1999
Applicant:
Inventors:
Yoshiaki Oda, Osaka, JP;
Takahiro Hino, Osaka, JP;
Hiroaki Katayama, Chiba, JP;
Tsuyoshi Watanabe, Chiba, JP;
Assignee:
Sumitomo Chemical Company, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07F 7/18 ; C08F 4/68 ; C08F 4/44 ;
U.S. Cl.
CPC ...
C07F 7/18 ; C08F 4/68 ; C08F 4/44 ;
Abstract
A specified transition metal compound having two transition metals and two cyclopentadiene type anion skeletone in tis molecule and said metals are linked through an atom of Group XVI of the Periodic Table of the Elements, and olefin polymerization catalyst component comprising said transition metal compound, an olefin polymerization catalyst comprising said transition metal compound, a specific organoaluminum compound, and a specific boron compound, and a process for producing an olefin polymer using said olefin polymerization catalyst.