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. 16, 1992
Filed:
Nov. 19, 1990
Applicant:
Inventors:
John A Ewen, Houston, TX (US);
Alan H Bitzer, Houston, TX (US);
David L Gressett, Galena Park, TX (US);
Herbert G Hummel, Pasadena, TX (US);
Assignee:
Fina Technology, Inc., Dallas, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
526125 ; 526124 ; 526127 ; 526159 ; 526351 ; 526128 ; 502104 ; 502108 ;
Abstract
The invention provides a process for increasing the efficiency of pre-polymerized catalysts used in the polymerization of olefins. The invention includes contacting a pre-polymerized catalyst with a cocatalyst or a mixture of cocatalyst and an electron donor prior to introducing the catalyst into a polymerization reaction zone.
Ewen, John. (1992). Efficiency of a pre-polymerized catalyst (U.S. Patent No. 5122583). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5122583
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile