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.:

US 6495690 B1

PDF
Full Text
Expired
Date of Patent:
Dec. 17, 2002

Filed:

Mar. 27, 2001
Applicant:
Inventors:

Shivanand Janardan Kulkarni, Andhra Pradesh, IN;

Kondapuram Vijaya Raghavan, Andhra Pradesh, IN;

Radha Rani Vippagunta, Andhra Pradesh, IN;

Srinivas Nagabandi, Andhra Pradesh, IN;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ;
U.S. Cl.
CPC ...
C07D / ; C07D / ;
Abstract

This invention relates to process for producing annulated pyridine bases by reacting cyclic ketones with aliphatic aldehyde in presence of ammonia in gaseous phase in the presence of a catalyst. This process provides an eco-friendly, more economical and highly selective heterogeneous method.


Find Patent Forward Citations

Kulkarni, Shivanand. (2002). Process for the synthesis of an annulated pyridine base (U.S. Patent No. 6495690). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6495690

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