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, 1992
Filed:
Jan. 21, 1992
Applicant:
Inventor:
James E Brown, Lafayette, CA (US);
Assignee:
Miles, Inc., Elkhart, IN (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
435-71 ; 435-721 ; 435-72 ; 436501 ; 5303871 ; 5303891 ; 53038825 ; 530413 ; 935102 ; 935108 ;
Abstract
An immunoassay for cellular proteins which may be present as contaminants in a product purified from mammalian cell culture. Since mammalian cell culture requires the use of protein-containing media, the assay must be specific in recognizing cellular proteins but not media proteins. This is accomplished by selective adsorption of an antiserum to cellular proteins against media proteins. Quantification of the assay may be improved through the use of a purified antigen, namely fibronectin, which is known to be highly immunogenic.