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:
Sep. 22, 1998
Filed:
Dec. 30, 1994
Applicant:
Inventors:
Timothy Andrew Riley, Nipomo, CA (US);
Mark Alan Reynolds, San Diego, CA (US);
Lloyd Robert Snyder, Orinda, CA (US);
Robert E Klem, Rancho Santa Fe, CA (US);
Assignee:
Genta, Incorporated, San Diego, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C12P / ; C08G / ;
U.S. Cl.
CPC ...
536 254 ; 528332 ; 424486 ;
Abstract
Methods for purifying an oligomer by normal phase column chromatography on a support selected from polyhydroxyethyl aspartamide, hydrophilic silica and silica from an oligomer impurity having a different nucleoside sequence are described. These methods are based upon the different retention times of the oligomer and the impurity on the column.