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:
Mar. 24, 1998
Filed:
Oct. 13, 1993
Applicant:
Inventors:
Bernard Fanget, Fleurieux Sur L'Arbresle, FR;
Alain Francon, Bessenay, FR;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C12N / ; C12N / ; A61K / ;
U.S. Cl.
CPC ...
4352351 ; 435239 ; 435 89 ; 435948 ; 4242261 ; 4241891 ;
Abstract
Process for preparing hepatitis A (HAV) antigens and vaccines. The HAV virus is multiplied on competent cells, the infected cells are lysed, the supernatant is recovered and the purification is carried out by a chromatographic procedure on an anion-exchange support and a gel filtration procedure, the purification procedures being carried out in the presence of a detergent, and the chromatographic procedure being carried out under conditions which retain the virions or viral capsids, which are then eluted.