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:
Apr. 18, 2000
Filed:
Apr. 24, 1998
Applicant:
Inventors:
Rupert Edward von Haken Spence, Calgary, CA;
Xiaoliang Gao, Calgary, CA;
Linda Koch, Calgary, CA;
Stephen John Brown, Calgary, CA;
Daryll G Harrison, Calgary, CA;
Qinyan Wang, Calgary, CA;
Assignee:
Nova Chemicals (International) S.A., Villars-sur-Glane, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
526127 ; 526160 ; 526161 ; 526172 ; 526943 ; 502155 ;
Abstract
An olefin polymerization process uses a catalyst with an organometallic complex of a group 4 metal having a bridged cyclopentadienyl-phosphole ligand, as defined by the formula: ##STR1## wherein: each Sl is a non-interfering spectator ligand;