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:
Nov. 09, 1999
Filed:
May. 20, 1992
Applicant:
Inventors:
Thomas Charles Arter, Rochester, NY (US);
Mohan S Saini, Pittsford, NY (US);
Assignee:
Johnson & Johnson Clinical Diagnostic Systems, Inc., Rochester, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C12Q / ; C12Q / ;
U.S. Cl.
CPC ...
435 21 ; 435-4 ; 4352831 ; 4352871 ; 4352877 ; 4352878 ;
Abstract
A dry analytical element has been prepared for the assay of prostatic acid phosphatase at a pH of from about 3 to about 6.5. The element can be a single porous spreading zone or a multilayer structure. Within the element is a relatively nonhygroscopic aromatic phosphate substrate for the analyte which produces a phenol reaction product. This product is reacted with a diazonium or tetrazolium salt, also in the element, to produce a chromophore for detection. A buffer in the element maintains it at the proper pH during the assay.