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:
Aug. 15, 2000
Filed:
Jul. 17, 1997
Applicant:
Inventor:
Ronald R Eva, Bahama, NC (US);
Assignee:
BASF Corporation, Mount Olive, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ; C07D / ; C07D / ;
U.S. Cl.
CPC ...
546152 ; 546153 ; 546159 ; 546168 ; 546171 ; 546178 ; 546181 ; 546182 ;
Abstract
The present invention relates to an improved Skraup reaction process wherein pressure is applied during the reaction and the number of equivalents of sulfuric acid utilized is reduced.