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:
Apr. 03, 2001
Filed:
Oct. 04, 1991
Applicant:
Inventors:
Johann Karl, Peissenberg, DE;
Fridl Lang, Tutzing, DE;
Assignee:
Roche Diagnostics GmbH, Mannheim, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 3/3543 ; G01N 3/3546 ; G01N 3/3539 ; G01N 3/353 ;
U.S. Cl.
CPC ...
G01N 3/3543 ; G01N 3/3546 ; G01N 3/3539 ; G01N 3/353 ;
Abstract
The invention involves methods for determining analytes, and reagents for use in these methods. The methods and reagents use one or both of a polyvinyl/pyrolidone with a molecular weight of at least 360,000, and a polyethylene glycol with molecular weight of at least 40,000. The assays are carried out nephelometrically, or turbidometrically. The reagents include at least one antibody which binds the analyte. The hook effect is reduced or avoided in the practice of the invention.