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. 09, 1991
Filed:
Sep. 01, 1988
Applicant:
Inventors:
Alexander U Bertland, II, Lansdale, PA (US);
William J Miller, North Wales, PA (US);
Assignee:
Merck & Co., Inc., Rahway, NJ (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07K / ; C07K / ;
U.S. Cl.
CPC ...
530413 ; 530412 ; 530415 ; 530418 ; 530422 ; 530402 ; 530403 ; 530405 ; 530406 ; 530427 ; 530827 ; 530830 ; 530380 ; 424 89 ;
Abstract
Hepatitis B PreS2+S antigen is isolated from plasma by adsorption on an affinity chromatography column, elution with a chaotropic agent and treatment with concentrated urea at an elevated temperature. The process retains all or substantially all of the preS2+S antigen.