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:
Dec. 25, 2001
Filed:
Jan. 15, 1998
Applicant:
Inventors:
Govindaswamy Ilavazhagan, New Delhi, IN;
Chakra Devakumar, New Delhi, IN;
Assignee:
National Research Development Corporation, New Delhi, IN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K 3/578 ; A61K 3/1335 ; A01N 6/500 ;
U.S. Cl.
CPC ...
A61K 3/578 ; A61K 3/1335 ; A01N 6/500 ;
Abstract
A process for preparing a spermicidal agent from neem oil includes (a) mixing neem oil with an aliphatic hydrocarbon solvent so that a precipitate forms, and filtering the mixture to separate the filtrate solution from the precipitate; (b) contacting the filtrate solution of step (a) with a polar extractant solvent whereby a spermicidal agent is extracted from the filtrate solution into the polar extractant solvent; and (c) removing solvent from the polar extractant solvent to produce a concentrated solution containing extract a spermicidal agent.