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:
Sep. 24, 2002
Filed:
Sep. 06, 2001
Applicant:
Inventor:
Gregory G. Hlatky, Morrow, OH (US);
Assignee:
Equistar Chemicals L.P., Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07F 1/00 ; C07F 1/04 ; C07F 1/06 ;
U.S. Cl.
CPC ...
C07F 1/00 ; C07F 1/04 ; C07F 1/06 ;
Abstract
Base-free carbazolides are prepared rapidly and in high yield and purity by reaction of a carbazole reactant with alkyl lithium in the presence of a dibasic ligand to form an intermediate complex, followed by reacting the intermediate complex with alkali metal alkoxide.