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:
Jul. 24, 2001
Filed:
Jul. 12, 1999
Applicant:
Inventors:
Qian Shi, Chapel Hill, NC (US);
John A. Hill, Durham, NC (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07H 1/00 ;
U.S. Cl.
CPC ...
C07H 1/00 ;
Abstract
A process for purifying the bacterial fermentation product ivermectin, particularly for use as a reference standard compound in a governmental regulatory approval process. The process includes the use of reversed-phase flash column chromatography coupled with gradient elution. An exemplary eluent mixture includes acetonitrile, methanol and water.