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:
Apr. 26, 2005
Filed:
Mar. 30, 2004
Santosh Kumar Srivastava, Lucknow, IN;
Merajuddin Khan, Lucknow, IN;
Suman Preet Singh Khanuja, Lucknow, IN;
Santosh Kumar Srivastava, Lucknow, IN;
Merajuddin Khan, Lucknow, IN;
Suman Preet Singh Khanuja, Lucknow, IN;
Council of Scientific & Industrial Research, New Delhi, IN;
Abstract
Accordingly the present invention provides an improved and economical process for the isolation of oleanolic acid from the roots of, which comprises of drying, grinding and defattening ofroots with light petroleum followed by over night extractions at room temperature (30-40° C.) three times with a single solvent selected from CHCl, CHCl, EtOAc, ether, acetone, MeOH, EtOH etc., removal of solvent under vacuum at 35-45° C., precipitation of crude extract and repeated partial crystallization of precipitate with a single solvent selected from CHCl, CHCl, EtOAc, ether, acetone, MeOH, EtOH, HO and others resulting in the isolation of oleanolic acid with 1% yield.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile