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:
May. 09, 1978
Filed:
May. 04, 1977
Applicant:
Inventors:
William J McAleer, Ambler, PA (US);
Edward H Wasmuth, Telford, PA (US);
Assignee:
Merck & Co., Inc., Rahway, NJ (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
A61K / ; C12K / ;
U.S. Cl.
CPC ...
424 89 ; 195-15 ;
Abstract
Biological fluid containing hepatitis B surface antigen is concentrated using ammonium sulfate, and subjected to an isopycnic banding followed by rate zonal banding.