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. 02, 2002
Filed:
Nov. 15, 1999
Applicant:
Inventors:
Raymond J. Swedo, Cook County, IL (US);
Mathias P. Koljack, Cook County, IL (US);
Romulus Gaita, Cook County, IL (US);
Stephen Frederick Yates, Cook County, IL (US);
Charles Wu, Morris County, NJ (US);
Assignee:
AlliedSignal Inc., Morristown, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07H 1/900 ; C07H 1/06 ;
U.S. Cl.
CPC ...
C07H 1/900 ; C07H 1/06 ;
Abstract
A process for the purification of nucleosides, and more particularly to a selective solvent extraction method for purifying protected nucleosides. In the purification process, solid particles of protected nucleosides are selectively washed to remove undesirable polar and/or non-polar impurities, while leaving the solid particles substantially undissolved.