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:
Mar. 18, 1997
Filed:
Feb. 22, 1995
Applicant:
Inventor:
Richard Lisowsky, Kamen, DE;
Assignee:
Witco GmbH, Bergkamen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F / ; C07F / ;
U.S. Cl.
CPC ...
534 15 ; 556-1 ; 556 11 ; 556 12 ; 556 28 ; 556 53 ; 556 43 ; 556 58 ; 526943 ;
Abstract
The invention relates to a new improved process for preparing bridged stereorigid metallocenes via organomagnesium and organotin compounds.