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:
Nov. 01, 2011
Filed:
Feb. 07, 2005
Applicants:
Jinhua an, Palo Alto, CA (US);
Rensheng Xu, Los Altos, CA (US);
John H. Musser, San Carlos, CA (US);
Inventors:
Jinhua An, Palo Alto, CA (US);
Rensheng Xu, Los Altos, CA (US);
John H. Musser, San Carlos, CA (US);
Assignee:
Pharmagenesis, Inc., Redwood City, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K 31/34 (2006.01);
U.S. Cl.
CPC ...
Abstract
Methods for extraction, isolation, and purification of therapeutically useful compounds fromare described. Extraction steps employing aqueous base and a hydrocarbon solvent, respectively, are found to increase the efficiency of the process and reduce the amount of material that must be removed by chromatography.