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:
Feb. 08, 2005
Filed:
Mar. 28, 2002
Applicants:
Rajan Hiralal Naik, Maharashtra, IN;
Padmakar Laxman Joshi, Maharashtra, IN;
Inventors:
Rajan Hiralal Naik, Maharashtra, IN;
Padmakar Laxman Joshi, Maharashtra, IN;
Assignee:
Council of Scientific and Industrial Research, New Delhi, IN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D207/00 ; C07D207/323 ;
U.S. Cl.
CPC ...
Abstract
The present invention provides an improved method for the preparation of dipyrromethanes by reacting the pyrrole with an aldehyde in the presence of an cation exchange resin.